[Episode started out with Karai on a billboard]
Rahzar: Karai, Shredder didn't authorize your little operation. I think we should-
Karai: Silence! I'm in charge while my father's in Japan! If we score an ambush on the turtles, it'll make us both look good. Now quiet. Here they come.
[They look over and see turtles running across the rooftops. Leo stops them.]
Leo: Hold up, ninjas! I have a feeling we're not alone here.
Mikey: You're right, Leo. We have a potential spy.
[He looks at a squirrel as it runs off.]
Donnie: Shh. I thought I heard-
Karai: Foot! Attack!
[The foot clan and Rahzar attacks. Rahzar lunges at Mikey.]
Raph: Serving one bot, hot!
Mikey: Get off of me, Rahzar!
[Donnie saves Mikey from Razher. Mikey gets up and fists bumps Donnie. The werewolf began to use his claws, summoning them out.]
Mikey: Look out!
[Mikey swats them away.]
Raph: Let's take her down once and for all.
[Leo begins to take on Karai and follows her.]
Leo: Karai, listen, There's something you should know. It's about your father. [leaps from below] Your real father! Your real name is Miwa!
Karai: I'm not interested in anything but you begging for your life.
[Suddenly, something started shaking the Earth.]
Mikey: Earthquake!
Rahzar: In New York?
[A second of a tower started to break.]
Leo: Karai, look out!
[Leo kicks Karai out to safety as something falls on top of Leo burying him alive.]
[Theme song.]
[The turtles dug the debris out of the way]
Mikey: Leo!
Raph: Keep digging!
Mikey: Leo?
Leo: Ugh! I think my shell got knocked loose. What was that?
Donnie: Some kind of localized quake. But what caused it?
Leo: Oh, no, she's gone! I could've changed everything. Now it's too late.
[The scene cuts to Carlos telling the news.]
Carlos: Scientists are calling them "microquakes," but they shake so hard, this reporter's hair was badly messed up! [fixes hair] No need for concern. I'm being treated by my stylist.
Mikey: Dude! His poor hair!
Raph: Earthquakes in Manhattan? Something is definitely up.
[In Donnie's lab,]
Donnie: I've been graphing the earthquake epicenters. They're happening in a pattern that's not at all random.
Mikey: Is that awesome or awesome bad?
Donnie: Awesome bad, Mikey. I got weird energy readings under the epicenter. I think some kind of tech is causing the quakes.
Raph: Huh. Are you thinking what I'm thinking? Mikey, who has that kind of technology?
[Mikey begins to think it over but his thought was kittens. Leo went to the dojo.]
Leo: Master Splinter, I tried to tell Karai that you're her father. I thought if she knew she might come over to our side.
Splinter: Mm. There is a saying. "He who runs his mouth gets a face full of nunchaku."
Leo: They say that in Japan?
Splinter: They would if you were there. Still, your heart is in the right place. Perhaps it is time she knew the truth.
Leo: Maybe you should tell the other guys, sensei.
[Later, Splinter had gathered his sons and told them what happened to his daughter.]
Splinter: This is difficult, but it is time you all knew the truth. The child I thought I had lost in the fire, Miwa, is Karai, my daughter. Fury became flame, and flame darkened the world with smoke. And in that darkness, Shredder stole Miwa away. I thought she had perished, but she was raised by Shredder as his daughter and trained as a deadly foot assassin.
Donnie:[shocked] Wait. T-this can't be.
Raph: It's some kind of joke, right, sensei?
Mikey: [stunned] Karai's our sister?
Raph: Sensei, she's still our enemy. She was raised by Shredder.
Donnie: Yeah. How can we ever trust her?
Splinter: There is good in her. I know this. The truth must be told, and it too will be an earthquake.
[At Shredder's lair.]
Karai: Father should've been back hours ago with his new little secret weapon.
Fishface: I've heard rumors it's a new mutant. Part woman, part tuna... All lover.
Stockman: I hope not. I'm allergic to fish. Nothing personal, Xever.
[Fishface glares at him.]
Rahzar: All I know is that he's a deadly assassin. The Kraang turned him into a mutant when he was a kid decades ago.
[Shredder arrives along with his footbots. They line up and bowed as their master entered.]
Karai: Father.
Rahzar: Master Shredder.
Shredder: You look terrible, Bradford. [heads to his throne] I have returned, and I bring with me the most feared assassin in all of Asia.
[He brings out a new mutant. A tall and muscular tiger with his tail cut. He wore a sleeveless vest with a azure scarf around his neck along with pistols attached to his belt.]
Shredder: Tiger Claw.
Karai: This is your secret weapon, father? Another freak?
Takeshi/Tiger Claw: This is the Foot clan you promised me? I must say, Master Shredder, I am disappointed.
[Karai was about to take out her blade but Tiger Claw held up a gun.]
Fishface: I honor you, great Tiger Claw. Can I offer you some refreshments?
Tiger Claw: Milk, skim.
[Fishface leaves. Karai took a look at the cut off tail.]
Karai: Sensitive subject maybe... But shouldn't tigers have tails?
Tiger Claw: Don't mock me, child. It was a rival who sliced off my tail. One day I will find it, and she will pay the price!
[Fishface brings out a glass of milk for him.]
Karai: If you can't keep your own tail-
Shredder: Silence, Karai. You will treat Tiger Claw with utmost respect. He is my new second in command.
Karai: [outraged] What? I've earned that job, not some oversized cat in a scarf!
Shredder: Enough! Tiger Claw, take my daughter with you to capture Splinter and his turtles. Karai, do not disobey him.
[Meanwhile outside. April and Casey are on the rooftop.]
Casey: So, April, vigilante-ing is cool and all, but how about a real date?
April: What do you call this?
Casey: I was thinking, you know, maybe something a little cozier. You, me.
[Suddenly, there was a sound from the bottom.]
April: The Kraang!
Casey: Nah, aliens would just mess up my mix.
[April looks down and sees the krang walking in the portal.]
April: There's so many of them.
Casey: So these are the robots you told me about?
April: With the little brains inside, yeah. What are they doing?
[They begin to climb down the fire escape and watched behind the dumpster,]
April: That's a new trick.
Casey: I got this, Red. Stay here.
[Casey knocks the kraang away and April slices the droid down. Then Casey whacks the kraang alien away.]
Casey: When you play cricket, you got to have some crumpets.
[The alien runs away. After it's gone, April turns off the portal and picks up the device.]
April: Wow. Let's take this to Donnie, let him check it out.
Casey: Why not take it to a real laboratory?
April: Trust me, Donnie's way ahead of most scientists. Come on.
[And so, April and Casey head to the lab.]
April: And then you press this button [opens the portal] and portable portal.
Donnie: Wow. The Kraang are always one step ahead. I wonder if this is what's behind the earthquakes. We're gonna have to test it.
Leo: I don't know, Donnie. You think that's a good idea?
Casey: If you turtles are gonna be slow about it, I'm going.
Raph: You're crazy! Nuts! Out of your gourd! I'm going first.
[Raph enters the portal]
Leo: Raph!
Casey: Come on, Red! [drags April]
April: Aah!
Donnie: April, wait for me!
[Everyone entered.]
Mikey: Can't let them go alone, dude.
[Mikey dives in.]
Leo: Mikey! Ah.
[Leo joins in as another earthquake rumbles, causing the device to fall.]
[The teens and the turtles made it to the portal. Everything around them look like thunderstorms with multiple portals.]
Raph: Okay. This is weird.
[Everyone looked around through each portal.]
Donnie: Wow! It's like the grand central station of dimensional travel! The Kraang must use it as a gateway between realities.
[Mikey looked over and sees the portal closed]
Mikey: Guys, the door's gone! We're trapped!
Leo: There's thousands of doors. Everyone, start searching for a way home.
Donnie: Whoa! Look at this, April.
April: Amazing. It's so beautiful.
Casey: Check this out, Red.
[Another portal reveals the 1987 dimension and see their classic counterparts.]
Mikey: It's us! Why do we look like dorks?
Raph: Is that supposed to be April?
Donnie: [blushing] Nice jumpsuit.
Leo: Guys, look! I think it's Dimension X.
[The portal reveals a pink dimension of their homeland.]
Raph: Home of the Kraang.
Mikey: This place is making my brain melt!
April: Shh! I-I sense something coming.
[The Biotroids arrive and walk toward the portal.]
Raph: Oh, no. How do you close the door? Where's the knob? Where's the knob? They're onto us!
Leo: [pulls out his swords] Get ready, team.
[The aliens come out of the portal shooting lasers as everyone dodges.]
Kraang: Biotroids, destroy!
[Biotroids began to attack, knocking Mikey as Casey whacked it down. One of them was defeated and was about to land on April.]
Donnie: April!
[Donnie saves her just as the biotroid fell.]
April: Thanks, D.
Donnie: It was nothing. Look out!
[They dodged a laser. The biotroid fired its blazing saws from its chest. Raph jumps onto the biotroid but gets thrown off.]
Casey: Casey Jones shoots! He scores!
[April used her tessen to stun the biotroid. Coming to its senses, it roars while Leo sliced down the first one. The alien retreats.]
Mikey: Here it comes!
Raph: Look out!
[The Biotroid slammed Mikey, Donnie and Raph and they disappear through the portal.]
Donnie: Guys, let's follow 'em!
[The portal disappears.]
April: They're gone!
Casey: We got to get that remote.
[The Kraang tosses it through the portal and the biotroid shoots cannons.]
Donnie: Butt cannons! Run!
[The remaining turtles fell to their home in the dumpster.]
Mikey: Guys, what dimension are we in?
[Leo climbs out of the dumpster.]
Leo: The others are trapped over there.
Raph: Yeah, and the smart member of the team is trapped with them. [climbs out and angrily blames Leo] This is your fault, Leo. If you hadn't gotten us-
[Another earthquake made them stumble.]
Leo: We got to find the source of these quakes.
[They begin to leave. On the rooftop, Tiger Claw and Karai are watching.]
Tiger Claw: Karai, you have your instructions.
[Tiger Claw leaps in front of the turtles as they draw out their weapons.]
Raph: Who the heck is that?
Tiger Claw: You may call me Tiger Claw!
Mikey: I knew it![Pointing his nunchuckus at Tiger Claw.] I was totally gonna name him Tiger Claw!
Tiger Claw:[Tiger Claw pulls out his handblaster revolver, spinning it, and aiming at the turtles as it powers up.] I ask only once. Summon your rat master.
Raph:[Walking toward Tiger Claw.] Sorry, pal! I'm not a cat person.
[Tiger Claw started to shoot his handblaster revolver as the turtles began to disburst. Raph wall jumps on the near building only to be knocked out by Tiger Claw's laser bolts.]
Leo: Raph!
[Leo charged at Tiger Claw and tries to swing his swords at him. Tiger claw misses uses his jetpack to dodge the last slash. Leo turns around raising his swords to block off Tiger Claw from firing at him but get knocked out, which leaves Mikey the only turtle standing. Tiger Claw summoned out his ice blaster, spins both blaster and aims at the turtles.]
Tiger Claw: You are nothing but cubs.
Mikey:[laughing nervously.] Nice kitty. Uh, let me see if I have some catnip on me.
[Tiger Claw roars and uses his ice blaster. Mikey dodged, then Leo and Raph dodged them. Mikey jumps on the building's ladder just as the ice bolts hits the ground.]
Mikey: Come on, bros, we got to get to high ground!
[They climb to the rooftop while avoiding lasers. Tiger Claw began to use his jet pack and started to follow them.]
[Donnie, April and Casey continue running.]
Casey: Out of my way, Don. I got this.
[Casey heads over and kicks the Bioitroids to the portal. They pushed and got rid of it.]
April: That was too close.
Casey: All right, Donnie. How do we get out of here? You're the expert, gap-tooth.
Donnie: [offended] Gap Tooth? Look in the mirror lately, cave-mouth?
April: Guys, stop! Check this out.
[The boys looked and saw another location.]
Donnie: Wow. It looks like another part of Dimension X.
[They looked over and saw a few krangs moving something that was squirming.]
Casey: Ugh. What is that?
Kraang: Kraang is aware of spies in that doorway where Kraang is not but soon will be.
April: I think we're in serious trouble.
[The Kraang surround them]
Casey: Don't tell me-
Donnie: Oh, great.
Kraang: Surrender is optimum.
Kraang 2: Non-surrender means disintegration,
Kraang 1: which is less optimum.
Donnie: For now. Play along.
[They lift their hands up.]
Casey: For the record, I don't count this as a surrender.
[The turtles continue battling Tiger Claw, dodging and deflecting lasers and ice beams as the latter switch different ammos onto his blasters. Tiger Claw ejected on e of his ammos before adminstering an ice ammo into his revolver. Tiger Claw confinues to fire at the turtles. Mikey run towards Tiger Claw avoiding ice blasts. Tiger Claw spins both his revolver and ice blaster then proceeds to open fire. Raph runs and jumps to avoid lasers. Leo charges at Tiger Claw dodging one of his laserse before attempting to swing his swords at Tiger Claw, with the latter easily dodging them. Tiger Claw uses his jetpack to fire lasers in the air. Leo dodges them, but Mikey got hit by the blast.]
Leo: Mikey!
[Leo gets knocked down just as Tiger Claw rams into him using his jetpack. Raph rushes towards Tiger Claw and tries to swing at him using his sais. Tiger claw gain distance from Raph using his jetpack then shoots bolas at Raph ending the fight. Tiger Claw lands nearby a furnace then picked up Mikey upside down.]
Tiger Claw: You are defeated. Summon your master, or the little one goes into the furnace.
Mikey: Don't do it, Leo.
Raph: It's a trap for Splinter!
Leo: Of course it's a trap. Tell me the part where I have a choice.
[In the Lair, Splinter’s phone began to ring.]
Splinter: The cheese phone! Truly an emergency. Moshi moshi. Leonardo! What is the problem? Do not fear, my son. I am on my way.
[Later the three were tied up.]
Raph: I can't believe you called him. If anything happens to Splinter....
Leo: What else could I do, Raph?
Tiger Claw: The rat! Where is he? [they did not answer] One push and you all go into the furnace.
Raph: Just wait, Tiger Claw. Splinter's gonna kick that little stub of a tail so deep in your striped-
Tiger Claw: Silence! I am tired of waiting. Your lives end now.
[He slowly begins to push them]
Mikey: This is it! I love you guys. Raph, it was me who ate your last piece of chocolate pepperoni pizza. I'm sorry, man! I was so hungry.
Splinter: Release my sons![Tiger Claws looks up as Splinter is standing at the other buidling looking at Tiger Claw with determination.] Now!
Tiger Claw:[Speaking Japanese while smirking.] An ancient proverb says even a cornered rat will bite a cat. Is that so?
Splinter:[Japanese] Hmm. Come find out.
[Tiger Claw began to fire his sniper rifle blaster with ice ammos as Splinter dodges them. Tiger Claw gain distance using his jetpack just as Splinter lands on the buidling. Tiger Claw reloads then continues to fire at Splinter. Splinter easily dodges the ice blast as he uses his cane to bat out debris with swift motion knocking Tiger Claw and disarming him of his sniper rifle. Tiger Claw growls as he takes out his machette.]
Tiger Claw:[Spins his machette, then getting into a battle stance.] I prefer to slice you into bite-sized pieces.
[Splinter and Tiger Claw charges at eachother crossing weapons in mid-air. Meanwhile, Donnie and the two humans are being sent to the sewer,]
Kraang: You will continue marching from the place you are to the place you are not yet.
Donnie: At least we're back in New York.
Casey: Didn't they mention feeding us something? I'm hungry.
April: No, they said they'd feed us to something, something called a-
Donnie: Kraathatrogon. Which is actually, I have no clue what it is.
Casey: We can wait around to be eaten or we can make a move!
[Casey electrodes one Kraang with his taser, April throws her fan while Donnie turns the vault to make steam.]
Donnie: Let's go!
[They begin to run.]
April: This way!
[They turn to close the door]
Casey: Go! Move!
[They continue to make their way down a large tunnel.]
Donnie: Wow! The old pneumatic subway! Built in the 1800s. Nobody uses 'em now.
April: What's gross slobbering sound?
Donnie: It sounds worse than Mikey eating pizza.
[They look over through the main vault and see Kraang milking the giant worms. They were hooked up by a large machine and pushing one of the space worms in into the portal.]
Donnie: Ooh, those must be the kraathatrogons.
Casey: The kraathatr…. trogo.. The tro….. "Space worms" is easier to pronounce.
[The giant worm roars and slammed against the ground, causing the ground to shake.]
Donnie: It's the worms. That's what's causing the earthquakes!
Casey: Why? Why bring 'em here?
April: Look! They're milking them... for mutagen?
Donnie: By Darwin's beard! This is where the mutagen comes from! Fascinating and-
April: Disgusting! [she feels something] Stop that!
Casey: Stop what?
April: I'm serious, Casey. I said stop!
[April looked and saw a small space worm nuzzling her. They scream. Alarmed, Casey whacked it with his hockey stick and the creature screeches.]
Kraang: Kraang, we have been discovered in the place that was meant to be undiscovered. Unleash the Kraathatrogon!
[The space worm roars as it starts to come toward the three teens.]
Casey: I don't think I have a big enough hockey stick for that thing.
[Back at the rooftops, Splinter and Tiger Claw are still in combat. ]
Tiger Claw: You'll pay for that, rodent!
[He charges again swinging his sword and breaks Splinter's cane.]
Tiger Claw: Now you are defenseless.
Splinter: A ninja is never defenseless.
[He used ninja stars and deactivated his jetpack.]
Mikey: You got him, sensei!
Raph: Slap the stripes off that cat!
[Tiger Claw continued to dodge as Splinter knocked him down and dodged the rope.]
Splinter: You will not trip me up so easily. And now we shall see if a cat always lands on its feet.
Tiger Claw: Now!
[Karai fires a poisoned dart and poisons him. Splinter collapses to the ground.]
Tiger Claw: You lose, rat.
[Karai began to approach as Splinter looked at her.]
Splinter: Miwa!
Leo: Karai. Karai, don't do this. Splinter... He's your father, your true father.
Karai: Liar! You'd say anything to save him.
Leo: No, I swear it. He's your father Hamato Yoshi.
Karai: If you won't be silent, I'll silence you.
[Karai callously prepares to brutally and remorselessly slay Leo. Leo screams in horror, but Karai’s attack is then blocked by Tiger Claw.]
Karai: [Shocked.] What?
Tiger Claw: Master Shredder desires them alive. He wants the pleasure of finishing the turtles himself.
Karai: Fine. Let's deal with the rat first.
[The turtles struggle to get free.]
Raph: Leave him alone, Karai! Or you're gonna answer to me!
Splinter: My sons, go. Now! [he uses his blade and frees the turtles] Run!
[Tiger Claw kicks him]
Leo: Splinter!
Raph: We got to come back for him, Leo. Move!
[They run off.]
Karai: Don't let them escape!
[But Mikey threw a smoke bomb down, allowing them to escape.]
Karai: At least we still have the rat.
[Meanwhile, Donnie, April and Casey continue running from the space worm.]
Donnie: Run! Faster!
[They fell down and the worm went past them. They look up, coming face to face with its second head. They scream and run back.]
April: We got to slow it down.
Casey: I'm on it!
[Casey gets onto his roller blades and runs right at the space worm.]
April: Casey, no!
Casey: Eat this!
[He throws a grenade at the worm. The creature growls and collapses.]
Casey: Yes!
[The worm gets up and starts chasing him, clearly enraged.]
Casey: No!
April: Casey, hurry!
[Donnie grabs onto the ladder and reaches out his bo.]
Donnie: April! Grab on!
[April grabs on the bo staff and Donnie pulls her up. Donnie then reaches out his bo to Casey, instructing him to jump.]
Donnie: Jones! The staff!
[Casey attempts to grab on, however, the worm eats Casey alive, much to the horror of Donnie and April.]
April: [Distraught.] No!!
Donnie: [Horrified.] Casey!
[The worm is gone.]
April: [Devastated.] He's gone. He's gone.
[April starts crying as Donnie comforts her.]
Donnie: I'm so sorry, April. I truly am.
[Back at the Lair, Leo was bandaging Mikey's arm which hurt him. Raph throws the ice pack in anger and lunges at Leo, blaming him for Splinter’s capture.]
Raph: This is your fault, Leo. If you hadn't called Splinter, we wouldn't be in this mess.
Leo: I didn't have a choice, Raph. It was him or Mikey. I thought I thought sensei would take care of him.
Raph: Well, you thought wrong!
Mikey: [stands up] We know where they took him. Shredder's lair. We do this for Splinter! There comes a time, brothers, when history is forged like Melted cheese. It sticks together as one! But is still soft and squishy in the middle. Mm. Are you with me?
Raph: Lamest speech ever. But I'm with you.
Leo: Let's do this!
[The boys prepare for battle. Outside, Donnie and April come out of the manhole.]
Donnie: Okay. Coast is clear.
April: [sadly] This is so terrible. Poor Casey. We have to find a way to stop those Kraang worms once and for-
[The earthquake started to shake, causing the duo to fall down.]
Donnie: You're right about that. And we know one man who knows more about the Kraang than anyone.
[They soon arrive at Jack's apartment. They look inside and a flashlight shines on them.]
Kurtzman: Great Caesar's ghost. Quick! Get in before you're spotted.
[They are now inside his apartment.]
Kurtzman: This is about the earthquake situation, isn't it?
April: You're never gonna guess what's causing it, Mr. Kurtzman.
Kurtzman: Call me Jack. I named the Kraang's little scheme The Manhattan project.
[In Shredder’s lair, Splinter slowly wakes up as he finds himself glared at by Tiger Claw, Rahzar and Fishface. Tiger Claw holds the bucket of water and dumps the water at Splinter to wake him up.]
Tiger Claw: Wake up, little rat.
Fishface: Nice work, Tiger Claw. You finally captured the great Splinter.
Rahzar: So is the poison going to finish him or what?
Tiger Claw: Most men would have expired by now, but it's only weakened him. He may be small, but he's tough as iron.
[Shredder arrives with Karai.]
Shredder: Bradford, Xever, leave us.
[Xever and Bradford obey and do as ordered. Shredder walks over to his mortal nemesis to mock him for his current situation.]
Shredder: [Smugly.] Hamato Yoshi, so you have come to this. A wretched rat man waiting to be put out of his misery.
Splinter: At least I do not wear a mask, hiding what little humanity I have left.
Shredder: [Angrily.] It is because of you that I wear this mask.
Splinter: All these years, you continue to deceive yourself and everyone around you.
[This enrages Shredder so much that he deployed his claws and lifted them up, preparing to wrathfully take Splinter’s life.]
Shredder: [Full of Rage.] You dare. Now it ends!
[Shredder screams in rage as he is about to slay him, but Karai stops him just as the blade reaches the neck mid-air.]
Karai: No, father!
Shredder: [Angry at Karai.] You would stop me?
Karai: You'd kill your greatest enemy while he's poisoned and chained? What about honor? Everything you've taught me.
Tiger Claw: [Agreeing.] The girl is right, Master Shredder.
[Shredder grunts but realizes that Karai is right. After a brief moment, Shredder retracts his blade back into his gauntlet letting Splinter live for now.]
Shredder: Hmm. Very well. Gather the foot. I will offer Hamato Yoshi one last fight.
[Everyone leaves. Karai stays with Splinter.]
Splinter: Why did you help me?
Karai: I don't know. Maybe because you look so pathetic.
Splinter: You have your mother's spirit ..So fierce, and yet so scared.
Karai: Never speak of my mother again! You ruined my family. You ruined all of our lives.
Splinter: No, it was Oroku Saki.
[Splinter faints again as Karai leaves him. Meanwhile, Kurtzman explains further details of mutant worms to Donnie and April.]
Donnie: So these worms are only children? How big are the adults?
Kurtzman: Huge! Some are hundreds of feet long. [unrolls scroll] The Kraang had been importing the worms from Dimension X to suck out their mutagen. It's kind of like milking a giant cow.
April: Okay, okay. We get it. Thanks. So how do we stop them?
Kurtzman: No clue how to stop 'em. But I know the Kraang ride these puppies. [points to a small drawing of Kraathatrogon and a nearby salt jar.] You see these antennae on its head? They pull 'em like the reins on a horse.
April: Gross!
[Donnie thinks about ii and looked at the salt covering the drawing.]
Donnie: Why didn't I think of it before? Salt!
April: Salt? What do you- Hold on a sec. [answers phone] It's Casey! Casey?
Casey: Uh, hey, April. Uh, so I'm kind of, uh, trapped inside this giant worm thing. It's cool. I'm alive and stuff.
April: You're inside the worm? You get a signal in there?
Casey: Yeah, it's, uh, trying to digest me, I-I think. Could use, uh, a little help. Aghh!
April: Sit tight, Casey! I mean, um, don't go anywhere. He's alive! He's alive!
[Meanwhile, Leo arrives at Shredder’s lair. Leo used his stars and katanas to take down the robots. He looked inside and found Splinter's body.]
Leo: Sensei. Sensei!
[Splinter awakens to see his son trying to free him.]
Splinter: Leonardo, go..... Now!
[Fire burst to life around Leo. Shredder approaches. Leo is about to reach for his sword but his arm was grabbed by Tiger Claw.]
Tiger Claw: Hello, again, my friend.
[Leo attempts to slash Tiger Claw. but the tiger mutant restrained Leo.]
Leo: Let me go!
Karai: I knew you'd come to us, Leo.
[Shredder walks over and sternly interrogates Leo.]
Shredder:[Sternly.] Where are the other turtles?
Tiger Claw: [sniffs air] It's just him, Master Shredder. He's alone. I sense no one else.
[Shredder walks to Splinter and he cut the chains binding Splinter.]
Shredder:[To Leo.] Watch, turtle, for it will be the last fight you ever see. The destruction of your master, Hamato Yoshi.[Removes his cape.]
[Splinter gets up weakly, even if he is poisoned. Shredder started to attack, but Splinter dodges his attack.]
Leo: You can do it, sensei.
[Shredder launches a tornado spin at Splinter. Splinter dodged but fell when Shredder spin kicks him.]
Leo: Sensei!
[Leo attempts to free himself, but Tiger Claw laughs evilly at Splinter’s impending death, while holding Leo. Shredder pins Splinter down.]
Shredder: Fight me!
[Splinter gets up but falls when Shredder kicks him. Shredder walks toward the beaten Splinter, retract his blades back in to his gauntlet and picked the beaten rat from the collar.]
Shredder:[Slowly preparing to kill Splinter.] Pathetic. I will put you out of your misery.
[Another earthquake appeared causing Shredder to drop Splinter and lose his balance. The others felt the same tremor as the glass started to spread. Splinter skillfully stroke his fingers at the glass and Shredder falls into the water. Karai is shocked. Fireworks burst out and Leo kicks Tiger Claw and gets free.]
Tiger Claw: No!
[Mikey and Raph jump into action.]
Mikey: Oh, yeah! Rescue time!
[Stockman runs off. Mikey kicks Fishface away and he and Raph dodge Tiger Claw and Rahzar and rescue Splinter and Leo.]
Raph: Come on, Master Splinter!
Tiger Claw: Get them!
[Tiger Claw sees them gone.]
Tiger Claw: Rahhh! NO!
Fishface: Master Shredder.
[Fishface runs toward the recovering Shredder as he angrily shoves Fishface away from him.]
Shredder: Do not let them escape, fools! GO!
[Meanwhile, Raph, Leo and Mikey hold Splinter as the three turtle brothers take their father some place, where is safe.]
Mikey: Faster, guys!
Splinter: You were foolish to come for me.
Raph: We'd never leave you, sensei.
[April and Donnie are in the sewers.]
Donnie: This is it. This is the tunnel!
April: Great. Now what?
[Donnie begins to whack his stick on the rails]
Donnie: I'm creating a vibration that'll attract the worm.
April: You really think a stick is gonna attract - aahh!
[The worm started to come this way.]
Donnie: The satchel!
April: Salt?
Donnie: Salt's ionic strength can burn through a worm's neurosecretory cells. It's like acid.
April: Yeah, but salt?
[They threw salt at the creature but it was to no avail.]
April: Uh, Donnie? We're out!
Donnie: No, wait!
[He throws the salt jar to the ground and April fans it to make a dust cloud. The worm stops and then vomits on them, also freeing Casey.]
Donnie: [disgusted] Anybody have any hand sanitizer?
Casey: April!
April: Casey!
Donnie: I hate to break up the reunion, but we have big, huge, giant problems!
[They look to see another worm, much bigger than the others.]
Casey: Now, that's a big worm.
[The enemies continue searching for the turtles.]
Tiger Claw: I smell the reptiles.
Karai: If they escape, Shredder will have all your hides.
Rahzar: And what about yours, Karai?
[The turtles set Splinter to a safe place.]
Splinter: I need to rest. Must get the poison out of my system.
Mikey: Just drink some water, sensei.
Splinter: Must meditate.
Raph: Let him rest. We'll keep a lookout for those goons.
[Raph looks aghast when he saw the villains standing there already.]
Mikey: Found 'em.
Tiger Claw: Attack!
[They charge at the villains. Leo kicks Karai away and faces Tiger Claw. Raph faces and fights Fishface.]
Raph: Fancy new weapon, Fishface. Let's see you use it.
Fishface: I'm going to chop you into tiny chunks and feed you to my piranha.
[Fishface charges at Raph as Mikey is seen dodging Rahzar’s attacks.]
Mikey: Too slow, Rahzar!
[Leo kicks Karai away and faces Tiger Claw.]
Tiger Claw: Your skills are nothing compared to mine. You are still just a cub.
[Leo's sword breaks, but Leo managed to slash his enemy’s cheek with a miniature knife. Tiger Claw looks at Leo stoic while putting his claws at the wound Leo inflicted on him. Back in the sewers, April, Donnie and Casey sneak past while the Krang droids try to pull the space worm.]
Donnie: Okay, here's the plan. I reverse the polarity of the portal and keep that thing from getting in. You guys create a diversion.
April: What kind of diversion?
Casey: Leave that to Casey Jones.
[Donnie sighs annoyed.]
Casey: Yo! Alien freak-job!
Kraang: It is humans known as humans.
[They started to fire as April and Casey took cover.]
April: I hope you have a plan other than getting shot at, Jones!
[Meanwhile, Donnie is making way to the top.]
[Everyone continued on fighting as Tiger Claw is about to hurt Leo. Splinter disarms him and threw him over.]
Splinter: Now it is time to end this.
Mikey: Sensei!
Splinter: Are you ready, my sons?
[The Turtles and Splinter charge at their enemies.]
Casey: Eat it, alien scum! This is so cool! Whoo!
Kraang: Kraang detects inferior weaponry.
[The bomb explodes along with the other droids. Donnie gets to the machine and pulls out the panel.]
Donnie: What the?
[The panel looks a lot different than he thought as Casey continued fighting.]
Casey: Oh, yeah! You like that, son?
Kraang: Kraang, unleash another kraathatrogon.
[The Kraang with the legless body releases another space worm. Everyone is fighting at the rooftop.]
Leo: Karai, I don't want to fight you anymore. I'm not your enemy.
[Suddenly, another earthquake begins. Karai loses her balance and falls off of the rooftop. Leo frantically runs to save her.]
Leo: Karai!
[Leo trips and sees Karai falling. Leo and Splinter watch in horror. Karai screams. Splinter sees his daughter falling and rushed to save her.]
Splinter: No!
[Splinter tries to go after her, but Tiger Claw trips the master by stepping on his tail, which causes Splinter to fall.]
Tiger Claw: You're not going anywhere.
Casey: Look out!
[Casey and April dodged the worm, slamming down.]
April: I've got an idea, something that Kurtzman said.
[Casey was about to get hit by the laser but April climbed onto the space worm and knocked the droid away.]
April: Come on, Jones!
[She pulls Casey up onto the worm.]
April: Move it, girl! Go, worm, go!
[She guides the worm around and started to defeat a few Kraang Droids.]
Casey: We'll distract the Kraang!
April: Do your thing, Donnie!
Donnie: I don't believe it. Whoa!
April: To the surface, wormie!
[Tiger Claw pins Splinter down, preparing to finish him off.]
Tiger Claw: You are mine now, Yoshi-San.
[Something hits him on the back of the head.]
Tiger Claw: Aah! Who dares?
[Leo charged and knocked Tiger Claw out. Leo heads to his dad.]
Splinter: Not too shabby.
[From the ground, the space worm emerged.]
April: Whoo-hoo!
Casey: Yes!
[Tiger Claw started to attack but Splinter knocked him and the tiger was mostly being eaten by the worm.]
Donnie: I got to reverse the polarity. Work! Why won't you work? Ha! I did it! I rule!
[All the droids and space worms get sucked into the portal. Donnie wrapped a cord around his waist and hung on. He managed to save April and Casey once the portal closed.]
April: You did it, Donnie! You saved the city.
Casey: I'm gonna take back everything I said about you, Donnie. You rule.
[Later, everyone reunited.]
Raph: So the earthquakes were caused by giant worms that lived under the sewers? That sounds worse than giant cockroaches!
Mikey: Well, I'm stoked you guys are back. Come here!
[Mikey grabs Donnie, April and Casey in a big hug. Everyone laughs.]
Donnie: We're glad to be back, trust me.
Leo: You did it, sensei.
Splinter: With the help of my brave sons, yes, we all did it.
Raph: But what about Karai?
[As they talk, Karai is seen hearing this from behind a water tower. She finally understands now.]
April: [Speechlessly.] I still can't believe that evil witch is your daughter. Um, sorry to be so honest.
Splinter: Perhaps one day she will believe the truth. But that is her decision. For now, we celebrate.
Mikey: Yeah! Time for some Antonio's! So where do you think that Kraang worm went anyway?
[The scene then switches to the world of the 1987 series, where the Turtles are up on a rooftop, each having a slice of Pizza. Just then, a portal appears and the very Kraathatrogon emerges in the middle of the street, causing the people to panic as the worm tries to go after every single one of them.]
80s Leo: Hey, do you guys see that?
80s Mikey: Whoa, dudes! A giant freaky worm! Totally mondo bizarro!
80s Donnie: I bet that pesky Shredder and Kraang are behind this.
[80s Raph nudges 80s Leo lightly.]
80s Raph: You know what that means, right, Leonardo?
80s Leo: We take down the creepy crawler and then we order pizza!
80s Donnie: Yes! Turtle power!
[The 80s Turtles jump into action.]
80s Mikey: Cowabunga!
[The episode ends.]