[The episode starts with The Turtles running around the city, celebrating their victory after defeating the Kraang's plot from the first season.]
Raph: And then I took my sai and shortened that kraang droid's skull. Wham!
Leo: So cool!
Donnie: Sure Raph, but I used my uncanny scientific knowledge to bring down an interdimensional portal. Equally as awesome!
Leo: What about Master Splinter? Wish I could've seen him take out the Shredder.
Mikey: And let's not forget cottage cheese demon. If we didn't stuff him in that microwave, the earth would be drowned in living cheese!
Raph: For the 22nd time, Mikey, There was no cottage cheese demon, ever!
Mikey: Did you see him?
Raph: No!
Mikey: Then how do you know, huh?
Raph: What? I-- that doesn't even make--[sighs] Sure, man. Cheese demon. Whatever you say.
Leo: We are awesome!
Donnie: Ow!
Turtles: Yes we are! Yeah, boy! High three! Unh, yes!
Mikey: Month long Kraang/Shredder mega-defeat celebration rules!
Donnie: So are we gonna stop by April's? We are 1. 3 blocks and six-- no, no-- Seven meters away from her apartment.
Raph: Yeah, that's not weird or anything, Donnie.
[The turtles have arrived at April's apartment. Donnie knocks on the window.]
Donnie: Handsome-gram for April O'Neil!
Raph: [annoyed] Ugh. Did you really just say that?
[April arrives]
April: Guys! Um, great to see you! Yeah, uh, you mind staying on the fire escape?
Leo: Seems like you've been avoiding us lately, April.
April: It's not my fault. Dad's alien abduction nightmares are getting worse. He's so freaked out, he won't let me out at night.
Kirby: [worried] I'm sorry, April. It's just--what if the Kraang are still out there? Waiting? Lurking? I'll do anything to protect you.
April: Dad. [sighs] I can take care of myself now. And--and I'll be with the guys! I couldn't be more safe!
Mikey: Trust us, Mr. O'Neil. Shredder and those little squishy brain-freaks are long gone.
[At Shredder's lair, Shredder puts on his helmet as Karai arrives activating the droid head.]
Kraang: Greetings, one who is called Shredder.
Shredder: Do you have my shipment?
Kraang: The shipment that is secret will soon be transported to the one called Shredder.
Shredder: And how will you deal with any complications?
Kraang: Kraang complicates the complication with Greater complications.
[theme song]
[At the lair.]
Mikey: Ah! Ninja dodgeball! Whoo! Missed me again, Leo! Ha!
[Leo catches the orb.]
Leo: Eat this!
[Raph catches the orb and tosses it over.]
Raph: Stick it in your shell!
[The orb bounces around hitting the tire, game, window, while April comes in holding pizza boxes which she dodges. Donnie is experimenting on Mutagen Man,]
Donnie: And now let's test our bottled friend's organs.
[The orb bounces into the lair and on Metalhead.]
Raph: Ha, you're out, Leo!
Leo: It doesn't count on a bounce.
Donnie: What are you guys doing?
Mikey: Playing dodgeball, fool. [gets hit by the orb in the stomach]
Donnie: With the Kraang communication orb? [catches the orb] This is a rare and fragile piece of alien tech! You guys can't just--
Raph: Eh, don't get your shell undies in a tangle, Donnie. The Kraang are toast!
Mikey: Yeah, lighten up, dude. This is a party!
Splinter: My sons, I know you are still joyously reveling In the defeat of our enemies, But a great question remains.
Mikey: What if cupcakes could talk?
Splinter: Are our enemies truly defeated? The Shredder is a crafty and patient foe who bides his time.
Leo: But sensei, you said Shredder lost whatever sense of honor he had left. We'd never see him again.
Raph: Yeah, and if he shows up, we got it all taken care of.
Splinter: Tomaru! You four have become lazy, overconfident. You shirk your training. This party ends Now!
Mikey: Well, that was kinda harsh.
Leo: Maybe Master Splinter's right. Maybe we are getting too cocky.
Raph: Ha! It's not cockiness when ya got the skills to kick massive--
[The orb began to bleep.]
April: That thing's working again?
Donnie: It's been quiet for weeks. It must have received an incoming signal. Which can mean only one thing.
Mikey: Cupcakes can talk!
Leo: The Kraang are back.
Mikey: I guess the party really is over.
[At the lab]
Donnie: The encryption's tough to crack, but it seems like The Kraang are transporting some kind of cargo. [Looks at the information] Using the stealth ship!
Leo: We've gotta find out what that cargo is.
Raph: So how do we track a ship that turns completely invisible?
Mikey: We cover it in honey so it attracts bees. Then, we follow the bees.
Donnie: We track it with this. It's aligned to the radar dishes we placed throughout the city. It'll create a triangulating pulse--
Raph: English, Professor Brainioff.
Donnie: [slowly] it will detect the kraang spaceship. [normal] April, can you stake out a rooftop and feed us the ship's coordinates?
April: Me? I don't know anything about radar!
Leo: What about your dad?
April: My dad? He barely lets me out of the house anymore. He's never gonna go for this.
Donnie: Please, April! Your dad's a scientist. We really need his help!
April: [sighs] I'll-- I'll see what I can do.
[She leaves]
Raph: The bigger question is, how do we stop that ship? We'll need something fast to catch it.
Donnie: I call it The T-Rocket!
[Donnie gestured to a new vehicle he built while his brothers had helmets on their heads and wing gliders.]
Raph: You want us to fly in that? Where are we going, Jupiter?
Mikey: Jupiter! But that place is infested with space yeast!
Leo: Time's up, team. We'd better move. April, you guys in position?
[They climb into the rocket while April and Kirby are outside on the rooftop.]
April: Um, roger. I think.
Kirby: It's kind of late for a school project, don't you think?
April: It's, um, extra credit, dad. We're--we're tracking, uh, pigeon migration! [chuckles] yeah.
[Kirby looks up and sees a floating figure of a stealth ship.]
Kirby: What is going on here? Is that the kraang?
[He drops the tracker. Donnie starts to prepare the rocket.]
Donnie: Coordinates locked! This is it.
Raph: If we explode, I swear I'll slap the green off you.
Leo: Launch!
[Donnie presses the button and the rocket takes off. Everyone gets launched right into the sky and then uses gliders.]
All: Yah! Help! Whoo-hoo!
[They crashed onto an unseen force.]
Leo: I think we found the ship.
[Inside the scout ship, the turtles come inside while the Kraang take notice]
Kraang: It is the ones who call themselves the turtles. Kraang! We must alert kraang!
Raph: Huh! Three little floating blobs of brains, that's it? We could take these guys in our sleep.
Mikey: We could take these guys in our sleep And with our eyes closed. Wha!
[A massive rumble thump made them turn around. Coming out of the mist was a blue ape-like robot suit.]
Mikey: Aw, sewer apples.
Raph: Uh, where's its head?
[The kraang went to the top of the head while it knocked the turtles away. The Kraang flies up to the head part and inserts inside.]
Kraang: Biotroid, engage.
[The machine activates, summoning its saws out of its chest.]
Donnie: Okay, maybe we were a little cocky.
[The biotroid starts to attack as it tries to use its chainsaws on Raph and tries to stab Mikey with its vines. The creature punched him, Mikey dodged the tentacle until It activated something and a container of ooze opened.]
Leo: The shipment! It's mutag--![gets hit by the biotroid]
[April watched as the scout ship flew around.]
April: Come on, guys. Bring it down.
[The droid started spinning the turtles around, Donnie and Mikey tried to stop it but they got thrown back. Donnie and Mikey get up.]
Donnie: This thing's too tough!
Mikey: Oh, I got this!
[Mikey charges and kicks the Kraang, causing the hatch to open. The Biotroid threw Raph and Leo away, hitting the container in the impact, knocking all the mutagen out. Donnie tried to stop them but they gel over the hatch.]
All: NOOO!
[All the mutagen canisters started flying out of the Kraang ship and all dropped into many places. April watched in fear and saw that one mutagen canister was about to fall on her.]
Kirby: April!
[Kirby rushed in and shield his daughter but he gets hit by the mutagen.]
April: Dad? Dad! No, no, no!
[Kirby completely falls off the building. April runs toward and stares down. She ducks as a flock of bats fly above. Then a giant mutant bat emerges. It was horrifying. His brain was swollen and his arms were mismatched. His wings are huge and his eyes are green.]
April: Dad. Oh, no. No. NO!
Raph: All that mutagen. [angrily to Mikey and Donnie] You two are the biggest screw-ups ever!
Donnie: [irritated] Well, you could've grabbed one single canister!
Leo: Um, guys, you wanna focus?
[They head to Leo's aid.]
Kraang: Kraang, the console that is broken must be made unbroken!
[Donnie charges at the Biotroid and whacks it only for guns to come out from the rear.]
Donnie: Butt cannons? It has butt cannons?
Kraang: Biotroid, engage!
[It starts to fire as the turtles dodged. Raph falls over as the machine pinned him down.]
Raph: A little help!
[April continued to run from the mutant bat.]
April: Stop! It's me, dad! April!
[She hides behind a doorway.]
April: Please don't ground me, but-
[She hits it with her fan and causes it to fly up to the top of the building, in pain.]
April: Sorry, dad.
[Meanwhile, the scout ship is still out of control as the kraang tries to control the ship.]
Donnie: Mikey, drop those kraang!
Mikey: Done and done! Throwing star time! Wha! Whoo!
[He knocks the Krang with ninja stars while Donnie whacks them away.]
Kraang: Kraaaaang!
[Donnie whacks the aliens off and used his spear to control the ship.]
Donnie: Left! [grunts] okay!
[The turtles yell as the turtles sway back and forth.]
Donnie: How about we set a new course? Like the moon! Yah!
[He moves it upward as the turtles pull the kraang out of the head. Leo then stabbed the biotroid.]
Leo: We gotta go!
[They jump out of the ship, using their grappling hooks.. Arriving at the rooftop, they see April with the bat mutant.]
Leo: Let's move!
[They charge at it until April stops her friends.]
April: NO! Don't hurt him!
[The turtles stop and stare at April before Kirby flies right past them. The bat grabs April and flies off with her.]
Donnie: April!
Raph: Argh! Can this night get any worse?
Leo: [notices the ooze] Guys. I think that mutant was Mr. O'Neil.
Raph: How could you tell?
Leo: You see many giant red-bearded middle aged bats lately?
Donnie: We gotta go after her!
Raph: But what about all that mutagen? We got canisters spread all over the city!
Leo: It's gonna have to wait, Raph. April's dad comes first.
[They begin to leave, before leaving, Leo takes the remains of the canister. In the lair, Donnie is pacing around.]
Donnie: [panicking] I can't think, I can't think! I'm seriously stressing here! Okay, think calm thoughts. Think calm thoughts.
Mikey: You think he's a vampire? Ya think he'll drink her blood and turn her into the undead?
Donnie: Are you TRYING to freak me out!?
Leo: Sensei, say we're, um, trying to catch a stray pet. Like a cat.
Splinter: A cat?
Leo: Or maybe a-a parrot? Um, what's the best strategy?
Splinter: [sighs] Food, of course. Any animal can be lured by food. So, what is this truly about?
Leo: Uh, trying to--
Raph: Um, nothing sensei. Just talking about parrots like we usually do.
Leo: Food! It's so simple, it's brilliant! What do bats eat?
Donnie: Rodents and other small invertebrates. Oh yeah, and bugs. The bigger the better.
Mikey: So where are we gonna find a huge bug? Dress up some sorry sucker in a giant fly costume?
[Later, Mikey is wearing a makeshift butterfly outfit with antennas and goggles.]
Mikey: I kinda feel like bait.
Raph: Oh, don't think of yourself as bait, Mikey. This is your new superhero costume. You could call yourself, um--
Mikey: Turflytle! Tur-fly-tle. Oh, yeah, I love it! Too awesome. What are my powers?
Leo: Um, you can... Hang from a rope.
Mikey: This is sweet!
[Meanwhile, April wakes up at the highest building.]
April:[groans] Where am I? [gasps] This is a dream. Gotta be. How did I get here?
[The mutant Kirby roars as April felt scared to see that her father was there. Then for a moment the bat vomited out trash, and a rat. April stares at her father and the bat smiles.]
April: [grossed out] Ugh, sick! You expect me to eat that? Now go! Go get me some real food! You go, dad! Go!
[The Mutant bat flies off.]
April: Okay, bought myself some time. [sighs] There's gotta be a way off this stupid ledge.
[Meanwhile, the turtles search for April.]
Mikey: Turflytle is on the patrol, buzz, buzz. His bug eyes spy every crime, buzz, buzz.
Raph: Will you stop saying "buzz, buzz" after every sentence?
Mikey: I could do that, buzz, buzz, But I probably won't, buzz, buzz. Whoa, dude! Be kind to insects, buzz buzz!
Leo: Donnie, any sign of Kirby?
Donnie: Nothing yet. Raph, shake Mikey around a bit more. He needs to mimic a fly's flight pattern.
Raph: [laughs] No problem.
Mikey: Whoo, yeah, buzz, buzz!
[Raph flies around with Mikey attached to the rope. Meanwhile, Kirby sees the bait and takes off to get it.]
Donnie: [gasps] Kirby at 4:00!
[The mutant bat knocks Donnie.]
Leo: He's heading straight for Mikey. Pull up, pull up!
Mikey: Whoa!
[He dodges.]
Donnie: He's coming around again!
[The bat started to chase the turtles]
Mikey: Time for Turflytle to take out his arch nemesis, Wingnut!
[He whacks Kirby with his Nunchuck]
Donnie: You are not giving Mr. O'Neil a monster name!
[Leo takes off his glider and jumps on Kirby.]
Leo: Mr. O'Neil! Kirby! We don't wanna hurt you! We wanna help!
[The bat started to fall and April saw them.]
April: Guys! Over here!
[Leo tugged on the bat's ears]
Leo: Stick to the plan!
Both: There's a plan?
Leo: The warehouse! We trap him in the warehouse!
[Donnie gets knocked off by the bat and starts to fall.]
Raph: Donnie!
[Donnie removed his glider and safely landed on the rooftop. His glider crashes into the wall.]
April: Donnie! Up here! I'm over here!
Donnie: April, hold on!
[He pulls out his hook and climbs onto the building.]
Leo: We're coming up on the warehouse!
[Mikey and Raph restrain Kirby as they dangle in the air.]
Raph: Leo!
Leo: The warehouse!
[They crash through the building and trap Kirby in a cage.]
Leo: Sorry, Kirby. It's only temporary.
[April and Donnie arrive.]
Mikey: Yo, we did it, Don! We caught the Kirby bat!
[Donnie bumps him]
Donnie: Mikey!
April: Dad!
[April runs to Kirby, horrified to see what happened to him.]
April: [brokenhearted] Dad. [to her friends] What are we gonna do with him? I mean, keep him caged forever? Feed him a steady diet of mice and flies?
Donnie: Actually, bats love moths and spiders too, so-- Sorry.
April: This is all my fault. If I hadn't lied to Dad-
Mikey: [honest] Listen, don't blame yourself, April. It was our fault. We spilled the mutagen. We'll fix it.
April: [shocked and confused] What? You guys--you guys spilled the mutagen?
[Leo, Donnie and Raph gestured no, but Mikey kept on telling the truth.]
Mikey: Yeah. We accidentally unleashed all that mutagen all over the city, But don't worry. We'll get it back.
April: [becomes upset, ready to raise her voice in fury] You.... You....
[The bat roars furiously, which scares Mikey who backs away.]
Donnie: I swear by Darwin's beard, we'll cure him.
April: [explodes] YOU MUTATED MY FATHER!!!
[As April's furious words were said, the bat roared and broke out of his cage.]
April: What? No!
[The turtles dodged. Kirby was about to get April but Donnie swags him with his bo staff as the bat flies away!]
April: Dad!
[The bat is already gone. With her mutated father gone, April looks at the sky, heartbroken, then looks at the turtles, incredibly upset with them. The turtles raise their heads down in shame and guilt as Donnie raises his hand to her, attempting to comfort her, but she harshly stops him.]
April: [furious] Don't! Don't touch me! You keep away from me! I never wanna see your faces, ever again!
[April runs away in anger.]
Donnie: April!
Raph: Let her go, man. Give her some space.
[This leaves Donnie very upset and hurt that April broke their friendship.]
[Back in Shredder's lair.]
Shredder: Where is my mutagen, creature?
Kraang: The complications became overly complicated. The ones known as the turtles stopped the shipment. Kraang will make amends.
Shredder: These creatures are useless. It is time to expand my army, On my own.
Splinter: This is all very grave news. Very grave, indeed.
Donnie: [heartbroken] I can't believe this is happening. Poor April.
Splinter: Do not dwell on the past. You must find every last canister of mutagen. You must search every street, Every park and playground, Every building and rooftop, Before we have even more mutants on our hands.
[In the very end of the episode, a squirrel is seen in an alleyway, and it curiously runs up to a broken container, with mutagen seeping out of it. The squirrel then curiously takes a sip of the Mutagen, ending with dramatic music and the animal turning its head towards the audience with a vicious white eye.]