[The episode opens with the docks at night, where two men exit their car. The scene cuts, where we learn that the two men are gangsters named Fulci Twins. Tiger Claw arrives at the scene.]
Tiger Claw: The Fulci twins, punctual as ever.
Vic Fulci: Tiger Claw.
Tiger Claw: I believe that belongs to me.
Vic Fulci: You ain't taking the merchandise without forking over our loot.
[Tiger Claw puts the case of money down and kicks it to the twins as the two gangsters throw the case of chemicals to Tiger Claw, who catches it.]
Tiger Claw: This had better be worth the price. You don't want to disappoint him.
[Suddenly, Slash arrives and confronts three bad guys.]
Tiger Claw: The infamous Slash. Not very stealthy for a ninja.
Slash: What I lack in stealth, I make up for in friends.
[Dr. Rockwell, Leatherhead and Pigeon Pete jump down from the background, regrouping with Slash. Enter the Mighty Mutanimals.]
Slash: Meet the Mighty Mutanimals.
Vic Fulci: More freaks?
Vincenzo Fulci: Blast them!
[The Fulci Twins open fire at the Mutanimals. Slash uses his snapping spiky shell as a protection. Leatherhead attacks the twins as the other Mutanimals fight off Tiger Claw.]
Leatherhead: Get the cat!
Slash: Hold still, you sneaky little-
[He gets kicked while Tiger Claw. Rockwell tried to use his power but hits Pete instead as Tiger Claw dodged and shoots his ice blaster at Rockwell, knocking the psychic primate out.]
Vincenzo Fulci: Vic, get in the car!
[Fulci Twins enter their car, then they start it up.]
Vic Fulci: Get this thing moving! Go, go, go!
[They leave as Leatherhead roars at them. Tiger Claw shoots an electric net at Slash, causing him to faint from electrocuting. Pigeon Pete attacks Tiger Claw from behind and starts furiously pecking at Tiger Claw.]
Pete: Feel the feathered wrath of Pigeon Pete!
[Tiger Claw grabs Pigeon Pete and smacks him at the cargo box behind him.]
Tiger Claw: I could use a snack.
[Leatherhead is about to attack Tiger Claw, but he falls after Tiger Claw throws Pete at him. Tiger Claw then grabs Rockwell. Leatherhead gets up.]
Tiger Claw: One more step and we find out if all monkeys go to heaven.
[All of a sudden, the van shows up and runs onto Leatherhead and Pete, Leatherhead falls to the water as Pete falls to the ground, unconscious. The Foot soldiers exit the van, they're the one who knocked two remaining Mutanimals.]
Tiger Claw: Secure the beast.
[The Foot soldiers chain Slash to back of the van and drag off with him and Rockwell.]
Tiger Claw: You will be of great use to him. [laughs evilly]
[They van exits and heads for Shredder's lair.]
[Theme song.]
[Crognard is dodging the brainwashed wizardess.]
Crognard: By the power of Lobnar, what witchery bewitches you,
[Graah holds him captive]
Crognard: Wizardess? Not you too, friend Graah. Even faithful Spooch.
Spooch: Spooch! [bites Crognard's leg]
Crognard: Crognard says, enough!
[He gets himself free and grabbed Spooch.]
Melphador: Your friends have no choice, Crognard, since I, Melphador, took control of their minds. They must obey me, just as you will. [laughs evilly] Your mind... Too small... Unable to take control. Ah!
[Wizardess has knocked Helphador down.]
Wizardess: Get him, Graah.
[Wizardess and Graah started beating him up as Crognard looked at the camera.]
Crognard: Remember, kids. Friendship beats evil mind control every time. Isn't that right, Spooch?
Spooch: Spooch loves Crognard. Spooch!
[Crognard laughs as Spooch licks him.]
Mikey: Hey, guys, ever notice how the cartoons we watch are kind of just like our missions?
Leo: Seriously? You're reading way too much into a cartoon show, Mikey.
Raph: Speaking of missions, I know what our next one should be. Shredder. Why don't we take him down once and for all?
Leo: Because of that impulsive, overemotional state right there.
[Raph gets right in Leo's face.]
Raph: Who are you calling impulsive and overemotional?!
Mikey: Honestly, I'd go more with hotheaded.
[Raph yells. Crashes can be heard while Donnie is changing the oil and trying to fix the Shellraiser.]
Donnie: Great, Raph's going off, again. Maybe I'll just stay in the lab for a while. Phew, there. I think the Shellraiser is finally fixed.
[A loud bang made him yelp.]
Donnie: Whoa! What was that? Did Raph finally blow a gasket? 'Cause I got spares.
[Leatherhead had arrived, injured.]
Leatherhead: Turtles.
Leo: Are you okay?
[Mikey runs up and holds Leatherhead.]
Mikey: Can't you see he's terrible? Look at his adorable, yet tortured gator face. Aw.
Leatherhead: Michelangelo is right. I bring dire news. Slash and Rockwell have been captured by Tiger Claw.
Leo: What? Why?
Leatherhead: He said they could be of use to him.
Raph: I'll give you one guess who "him" is.
Mikey: Yeah... that guy who does the thing... with the thing... I have no idea who you're talking about.
Raph: Shredder!
[Pigeon Pete arrives, slamming into the column.]
Raph: Oh, not Pigeon Pete.
Pete: Wow, now this is a secret lair!
Raph: Anyone but Pigeon Pete.
[Pete looks around the lair.]
Pete: A tire swing! Is that a real Space Heroes pinball machine? You ask me, the only thing this place needs is some bread.
Mikey: We got better than bread. Pizza crusts, brah.
[Pete tries one of the pizza crusts.]
Pete: Oh, where have you been all my life?
Raph: Why couldn't Tiger Claw take him instead?
Leo: Hey, I'm not crazy about Slash, but the Mutanimals are our friends, and we're gonna rescue them.
[At Stockfly's lab. Shredder is watching Karai trying to get out as Tiger Claw arrives.]
Shredder: You found the chemical?
Tiger Claw: When have I failed you, Shredder?
[He opens the case.]
Stockfly: All is ready, my master. This is the last ingredient I needed to finish the formula that will give you complete control over her.
Shredder: Before you give it to Karai, test it on the two mutants.
Stockfly: Brilliant, sir. In case there are unexpected side effects.
[He flies over to Slash and Rockwell, who are in restraining tables.]
Stockfly: Prepare yourselves, my willing subjects.
Slash: What are you gonna do to us?
Rockwell: I'd just like to clarify that we're not willing. Not at all!
[Slash attempts to use his backside of the spiked shell to cut free of his straps.]
Stockfly: The serum must be administered directly to your brains, and I have just the creatures to perform the task.
Both: Creatures?
Stockfly: Observe my little worm friends. [giggles]
[He puts it down and then, the ooze landed in the terrarium. He pulls out a mutated brain worm and begins to approach Slash..]
Slash: Let us go! I mean it! [screams]
[Outside the rooftop, the turtles, Leatherhead and Pete survey the Shredder’s lair.]
Leo: What are you doing, Raph?
Raph: Going in all blades blazing, like we should have done weeks ago.
Leo: We don't even know exactly where they are. We need a plan.
Pigeon Pete: You need a recon fly-by? I'm the birdman for the job. Pigeon Pete's a go!
[He falls. but flies upward. Below and slamming into the building, Slash and Rockwell escaped.]
Slash: Rockwell, we've got to move.
Donnie: They escaped on their own?
[They head to the manhole cover and the turtles arrive to defeat and decapitate the footbots. Raph heads to Slash's side.]
Raph: Slash, are you okay?
Slash: [softly.] Raphael.
Leatherhead: What did Shredder do to you?
Donnie: They don't look so good. We've got to get them back to the lair, guys.
[Back home...]
Splinter: Your escape was very fortuitous. Shredder is not one easily eluded.
Raph: Ah, we're just glad you two are okay.
Mikey: Are you sure? 'Cause something seems off about you two.
Rockwell: They did do something to us. [Looking at his reflection on the cup.] Yes, it's all coming back now. We were being experimented upon by Shredder.
Donnie: Experimented on?
Slash: He had these strange little worm creatures, and then... and then...
[He clutches his head, seemingly in pain.]
Mikey: Dude, don't leave us hanging.
Splinter: Let me get you some water.
[As Splinter takes off, Slash's eye turn white. Slash roars suddenly, and strikes at Splinter, knocking him down the ground.]
Raph: Splinter!
[Slash roars and tries to strike with his mace, but Leo blocks his blow.]
Leatherhead: [horrified] This can't be happening.
Raph: How could you, Slash?!
Slash: [brainwashed] Splinter must be... destroyed!
Leo: You'll never hurt Sensei again!
[Enraged, Leo and Raph furiously attack brainwashed Slash and kick him out from their sensei. Mikey then attacks Slash from behind.]
Raph: Leo, check up on Splinter.
Leo: Sensei?
[Rockwell clutches his head, then his eyes turn white. He is brainwashed too! He lifted Mikey and Donnie in the air.]
Donnie: Rockwell's gone crazy, too.
[They crash onto Leatherhead.]
Mikey: A little help, Raph!
[Mikey crashes into Raph while Leatherhead pins Slash.]
Leatherhead: Don't make me hurt you, Slash.
Slash: [brainwashed] Don't make me laugh, monster.
[Slash bites him and kicks Leatherhead away. They go into combat as Pete picks at Rockwell.]
Pete: I don't know what's come over you, Doc, but snap out of it!
[He crashes into the Space Heroes pinball game]
Leo: Rockwell, why are you doing this?
Rockwell: [brainwashed] It is the will of the master.
Donnie: He's mind-controlled.
[The objects knock them around.]
Slash: [brainwashed] Shredder desires one of the turtles.
Raph: I volunteer to go kick his butt right after I kick yours.
[As Raph charges, the brainwashed Slash is wielding a smoke bomb, and he throws it directly at Raph. He coughs, weakened and falls to the ground. Slash picks him up.]
Slash: [brainwashed] Rockwell, fall back!
[Slash and Rockwell flee with an unconscious Raphael.]
Leo: Raph!
Mikey: Sensei, me and Donnie will stay with you.
Splinter: I will survive. You must save your brother. Go!
Leo: We need this door open now!
[Leatherhead breaks the doors free and sees the wagon driving off.]
Mikey: They stole the party wagon!
Donnie: The Shellraiser's fully operational. Let's go!
[They got into the Shellraiser and drove after them.]
Leo: Donnie, slow them down!
Donnie: Taking out the trash!
[He starts to fire trash but the wagon dodges.]
Leo: Deploying battering ram.
[The roller activates and hits the rear.]
Rockwell: [brainwashed] That's close enough, turtles.
[He releases oil stick.]
Donnie: Oil slick! Oil slick!
[They stop the Shellraiser just as it ride over the oil slick.]
Mikey: They got away with Raph.
Donnie: At least we know where they're going.
Leo: Looks like we're gonna do what Raph wanted after all. Take the fight to Shredder.
[Raph begins to wake up, finding himself binded to a table.]
Raph: [groans] Where am I? Slash, Rockwell, snap out of it!
Stockfly: It's no use. With my mind control serum coursing through their brains, resistance is futile.
Raph: I'm really lousy at taking orders. Ask Leo!
Stockfly: We'll see.
[Stockfly began to place the mind worm onto Raph.]
Raph: Okay, that is disgusting.
[Slash holds Raph's head in place. Stockfly places the worm on Raph, and the worm places its head on Raph's forehead. Raph screams in agony.]
Donnie: I just realized we don't have a strategy. Um, shouldn't we make a plan?
Leo: Forget the plan. [unsheathes his katanas] Leatherhead, get ready to make a door.
[Raph is dropped to the floor and wakes up. All around him are statues of onis in a circular small room.]
Raph: [sighs] Where am I?
[Shredder in a sitting position grabs put on his helmet.]
Shredder: Your new home, mutant.
Raph: Shredder. Finally, I've been waiting for this!
[He charges but when Shredder told him to stop, he couldn't move his arm to stab at Dhredder's face.]
Shredder: Stop. [Gets up and faces towards Raph] Now, bow to me.
[Raph struggles until his eyes turn white, now brainwashed, and kneels before the Shredder.]
Shredder: Attack me!
[Raph starts to attack him.]
Shredder: Harder. Without mercy.
[Leatherhead, Pete and the turtles made it inside and began to head downstairs and to the dungeon. They hear something from the other side. Raph overpowers Shredder.]
Shredder: Enough.
[The Mutanimals and turtles arrive in the chamber.]
Mikey: It's Raph!
Leo: Raph, do it! End this!
Donnie: What is he waiting for?
[Raph stops.]
Shredder: [laughs evilly] Raphael is mine now to control. As are your other mutant friends.
[Rockwell and Slash, now brainwashed, join Shredder's side.]
Tiger Claw: No escape for you, reptiles.
[The brainwashed Raph approaches the skull statue to put on a pair of steel claws just like the one Shredder has.]
Mikey: Raph?
Shredder: Now, let us welcome you properly. [laughs evilly]
[Leo begins to charge but Raph blocks him. Leo back flips away from the brainwashed Raph.]
Leo: Raph! Snap out of it, man! Shredder's the enemy!
Raph: [brainwashed while brandishing his claws.] You are the enemy!
[Raph charges at Leo.]
Shredder:[Sitting in a kneeling position.] Let us see what my new servants can do.
[The brainwashed mutants attack, while Shredder watches from the sidelines surrounded by a ring of fire.]
Pete: You take Slash! I'll take fly-boy.
[While Pete takes care of Stockfly, Leatherhead starts fighting Slash as he grabbed his mace.]
Leatherhead: I am your friend, Slash.
Slash: [brainwashed] Not anymore!
[He slammed the gator down. Pete is being chased by Stockfly.]
Pete: Get off of me, bug boy.
Stockfly: You look delicious.
[He starts to spit acid at the pigeon as he tries to attack. They now started to slap fight.]
Stockfly: Hey! Watch the mandibles, you jerk!
Rockwell: [brainwashed] Your pathetic ninjutsu is no match for the power of my mind.
[Donnie deflects the weapons and puts an end to his bo staff whacking on him. Tiger Claw shoots his ice laser pistol at Mikey.]
Mikey: No fair with the ice guns!
[Leo continue on fighting Raph as he leaped onto a statue as he fights Raph.]
Leo: Raph, you've got to break Shredder's control. This isn't you. Where's that crazy temper?
Raph: [brainwashed] Don't be a fool. There's nothing you can say, Leonardo.
[He threw his sword and charge at Raph.]
Leo: Break free, you jerk!
[Shredder watches as the mutants seemed to be losing. Mikey was chained in his own nunchucks but Leatherhead saves him from Tiger Claw. Leo and Raph continue on fighting.]
Leo: Ah, I think I get it. You can't feel emotion because you're Shredder's puppet! As a matter of fact, I'll bet you like doing whatever Shredder tells you. You probably love it.
[He slashed Raph. Growling, Raph was about to kill Leo until his stomach groans and he vomits out the brain worm. Leo then stabs it dead.]
Leo: Raph?
Raph: How's it going, brother?
Shredder: Stockman, what is going on?!
Stockfly: [confused] I don't know, sir.
[Pete knocks Stockfly down. Rockwell is seen using his psychic powers to make Donatello slap himself across his own face.]
Donnie: Leo, you're a genius. Ow! Ow! Ow! Something you're obviously not, Rockwell. Ow! Ow! So you can make me slap myself. Ow! If you had a brain to go with your powers, you might actually - Ow! - be smarter than a gibbering baboon! Ow!
Rockwell: [brainwashed; snaps out and rages] What? How dare you? A reptilian-brained evolutionary throwback-
[Rockwell gags and vomits the brain worm out. Donnie then stomps the worm dead.]
Donnie: Sorry about the insults, Doc.
Rockwell: No. They were necessary, although complete, fabrications.
Donnie: Agree to disagree. Now blast that worm out of Slash!
[He uses his psychic powers and Slash yells in pain, vomiting out the worm as it dissolves in the flames.]
Shredder:[Getting up from his kneeling position.] It is time I end this experiment.
[The flames dissipate and Shredder reveals his claws. The turtles and the reassembled Mutanimals all assume battle stances, ready to fight.]
Leo: Turtles, Mutanimals... Get him!
[All the mutants charge at Shredder but he knocks them away. Just as Shredder was about to finish Leo and Raph, A column began to fall on Shredder. Leo and Raph move out of the way for the column to land on Shredder. It was revealed that Slash and Leatherhead were the ones who pushed the column on Shredder. He was defeated until the gate opens as footbots pour out like ants.]
Leo: Another time!
[The four turtles throw down their smoke bombs as it engulfs them and the Mutanimals, causing them to disappear. Once the heroes are gone Tiger Claw directs Stockfly and the footbots to follow him as they get Shredder out of the column. Shredder comes out of the hole and stands while looking down. Shredder looks at the camera, looks towards the ceiling, and screams in pure rage.]
Slash: I'm... sorry, Master Splinter. When I attacked, I could see everything that was happening, but I couldn't control my actions. Please, forgive me.
Splinter: There is nothing to forgive, my friend. This was Shredder's doing. Your mind was not your own.
Donnie: Those worms must have programmed you two like sleeper agents.
Rockwell: Indeed, it was dreadful. My thanks to all of you for saving us.
Mikey: All I know is that those worms were nasty, and it's awesome to have you guys back.
Raph: Thanks, little brother. But we owe it all to Leo.
Leo: Well, what would we do without you? Every team needs an impulsive, loudmouthed, super-violent hothead, right?
[Raph, seemingly enraged, goes up to Leo once more, only to give him a big-sized hug.]
Raph: You're the best, bro.
Leo: Okay, all right. All right.