(Finn's family attack the villains and the ice soldiers. Finn transforms into Fire Finn and sees Bandit Princess and her friends.)
Finn: Oh, Jesus! You... You can take those guys, right?
Fire Finn: She has got shit you have never seen.
Finn: What does that mean? What are our chances?
Fire Finn: Hmm. Pretty much zero.
Finn: You're right, bro. Let's go save the Ooo. Simon, come with me. (Throws the teleportation gun to Marceline)
(Fire Finn and Simon fly to Bandit Princess and her friends. Liu Kang does a bicycle kick on the ice soldiers. Jax grabs an ice soldier and punches him to pieces. Godzilla wrestles Mechagodzilla, throws him to the trees and roars. Kamen Rider fights Hydra and Harvester while the Power Rangers fight ice soldiers with Donatello, Leonardo, Raphael and Michelangelo who fight Shredder, The Rat King, Bebop, Rocksteady and Krang. The scene cuts to Fire Finn and Simon who confront Bandit Princess and her servants then Finn changes into himself.)
Bandit Princess: Finn, how did you fly?
Finn: Enough talk. And now it's your turn to be dead forever. (Draws his sword)
Bandit Princess: Then die. (Snarls and draws Night Sword)
(Finn turns into Fire Finn and duels Bandit Princess. Bandit Princess tries to kill Finn, but she stabs the floor.)
Finn: Holy shit!
Fire Finn: Told you. (Grunts)
(Fire Finn fights Bandit Princess and kicks her to the floor then she groans.)
Bandit Princess: You have flame powers. (Fire Finn growls) But not powerful enough. (Snaps fingers)
(Sir Slicer yells, tries to attack Finn, but Simon duels him. Fire Finn stands up, prepares to duel her, Bandit Princess growls and duels him again. Fire Finn chokes Bandit Princess, she pushes him to the bars, snarls and pushes him to Dr. Gross's lab. Bandit Princess attacks Fire Finn, uses her claws to scratch Fire Finn's face, but his face regenerates quickly. At Dr. Gross's launch pad, Ricardio grabs Duncan by the hair, pushes him to the launching keypad, then Duncan sees it and stands up.)
Simon: I know this may sound like a great idea, but I think it could be a hoax if you've been a good hero or an anti-hero. Uh, let's talk music. Do you like the Elton John song Rocket Man?
Ricardio: I don't like soft-ass shit.
Simon: Oh. Oh, you don't. Okay. Well, I only bring it up because, uh... it's you. You're the rocket man. (He fires the rocket out the window, taking Ricardio with it) How do you like how that shit works?
(Outside Dr. Gross's rocket, Ricardio screams while he falls to his death as the tree impales him. He chokes and groans with his last breath. In Dr. Gross's dungeon, Bandit Princess throws Fire Finn to the floor and grabs his fire form.)
Finn: (Yells in pain) Bandit, stop!
(Bandit Princess knocks Finn up, takes a look at his fire form sinisterly, then Finn stands up and bonds his fire form. Fire Finn yells and wrestles Bandit Princess then punches her. He bonds Bandit Princess and she shrieks. Feedback squeals as Bandit Princess lets out some strained grunts. The scene cuts to Simon who uses the microphone to make feedback squeal.)
Simon: That's how feedback is the only weakness.
(At Dr. Gross's dungeon, Fire Finn comes out of Bandit Princess then Finn fights her.)
Bandit Princess: (Groans and spits her tooth out) You're too late, Finn. This'll be the next stage...
(Finn punches her to the cell and the cell door closes.)
Finn: You talk too much.
(At Dr. Gross's lab, Simon finds a cure for his skin and discovers an antidote. Ash busts down the door and uses AK-47.)
Ash: Hey, you mother!
(Ash fires his gun. Fire Finn bonds Finn then he transforms and walks to Ash. Ash's gun clicks and he reloads it while he attatches the sight-in scope and aims at Simon.)
Ash: Never should have traveled back in time.
Simon: You should have never came after my mothers.
Ash: Tough luck, Simon. I'm still Marceline's boyfriend.
Simon: Yeah, well, Marshall Lee's gonna be my mother's new boyfriend for now.
Ash: All right. Let's see what you've got.
(Ash draws his knife as Fire Finn enters.)
Fire Finn: Hey! (Punches Ash, who screams, while he falls down to his death) Well done, Simon. You found the antidote for your skin.
Simon: Thanks.
Fire Finn: We're going after Samantha!
Simon: All right.
(Fire Finn and Simon go after Samantha. The scene cuts to Samantha as she turns around and sees Fire Finn and Ducard walk to her angrily.)
Samantha: Finn, listen to me. None of this is my fault. You see, Gumbald poisoned my mind. Turned me against you. (Laughs nervously) I like you. No, stop. I command you to stop! I'm a dog! You took an oath to obey him! You swore to the Legion! Wait, wait, wait, wait. (Chuckles) You fight for money. I have plenty of money. Name your price. Find it in your heart to forgive.
Fire Finn: (Chokes Samantha) You want forgiveness?
(Samantha nods. Fire Finn throws her to the wall, grabs her own dagger and stabs her with it. Samantha groans weakly.)
Fire Finn: Ask my family for forgiveness.
(Samantha lets out a dying sigh. Pete chokes Fire Finn with chains as he pulls it where it drags him and takes his knife out of his pocket.)
Pete: I've never killed a man before.
(Fire Finn grunts. Pete is about to kill him, but Shermy stabs him in the back with the Finn Sword. He removes it as Pete groans and falls to the floor then dies after he drops his knife.)
Shermy: (Sighs) Nobody tries to kill my ancestor.
(Finn changes back into himself, takes the chains off, and stands up.)
Finn: (Shakes Shermy's hand) Well done, Shermy.
Marceline: Hey, Finn.
Finn: Marceline? Where have you been?
Marceline: I sent all of those villains back to Mars.
Finn: Oh. Good job, Marcy.
Simon: You've done well, mother. I found an antidote for my skin.
Marceline: Oh. Well, drink it.
(Duncan drinks an antidote. His skin changes to grey.)
Simon: Hey, it actually worked.
Marceline: You've done well, my son.
Dr. Gross: And that's why you should drink antidotes.
Simon: Oh. Thanks, doc.
Dr. Gross: You're welcome.
Simon: Thanks, mother.
Beth: See? Nothing changes.
Jake: Thanks, Beth.
Fern: Hey, Finn.
Finn: Oh, hi, Fern.
Fern: I just survived.
Finn: That's good to hear.
Flame Princess: Finn, you must defeat Bandit Princess. Take Marceline, Dr. Gross, Patience St. Pim, Simon and Tiffany with you so they can defeat Ash and Me-Mow.
Finn: On it. Dr. Gross, Marceline, Simon, Patience, Tiffany, let's go. It's time to finish this war.
(Finn turns into Fire Finn and walks to Bandit Princess, Sir Slicer and Me-Mow with Marceline, Dr. Gross, Patience St. Pim, Tiffany and Simon. The scene cuts to Bandit Princess who points the Night Sword at Toronto.)
Bandit Princess: I've lost the Legion of the Candy Kingdom because of Gumbald. He was turned into a bowl of punch after he was tripped by a rock. Bow to me!
Toronto: No matter how the wind blows, a mountain couldn't bow to it.
(Fire Finn busts down the door as he, Marceline, Dr. Gross, Patience St. Pim, Tiffany and Simon walk to her, Sir Slicer, and Me-Mow.)
Fire Finn: Bandit Princess, it's over for you.
Bandit Princess: That's... That's impossible! How'd you do it quickly?
Simon: I guess this calls for a final battle.
Sir Slicer: You're Marceline's son, Simon Abadeer, aren't you?
Simon: Yes. And we're here to kill you.
Bandit Princess: You're ruining everything!
Tiffany: You'll be joined in extinction.
Patience St. Pim: You'll be dead by now.
Dr. Gross: And you'll get such a dead woman.
Bandit Princess: (Growls in frustration) JUST DIE ALREADY!
(Bandit Princess yells and duels Fire Finn. Marceline duels Sir Slicer with Simon. Tiffany fights Me-Mow with Patience St. Pim and Dr. Gross while Toronto flees from her rocket. Sir Slicer aims his pistols at Marceline and Simon.)
Sir Slicer: You see, it takes patience to make a man. The patience to watch and wait, to protect all of us, quietly, for God and country, without any recognition at all!
(Me-Mow strangles Patience St. Pim with her tail. Patience St. Pim chokes as she looks at Finn's semen in the condom)
Me-Mow: There's no other way to defeat me, Patience St. Pim! You'll be dead!
Patience St. Pim: (Shoves a condom of Finn's semen in Me-Mow's vagina) You're pregnant, bitch!
(Patience St. Pim punches Me-Mow in the vagina as the condom explodes. Me-Mow moans while his semen drips then she picks a condom out of her vagina, becomes tranquilized and pregnant.)
Patience St. Pim: Marceline!
Sir Slicer: There are no good heroes or anti-heroes, Marceline. It's just us and them. And you chose them.
(Patience St. Pim shoots Sir Slicer in the head and he dies.)
Simon: (Breathes heavily) Anytime, Sir Slicer.
(The scene cuts to Fire Finn who fights Bandit Princess. Finn transforms into himself and defeats Bandit Princess by kicking her to the wall.)
Bandit Princess: (Groans) Wait! Have mercy! I'll do anything! You want your sword back? (Throws the Night Sword to Finn) Take it! Take it, it's yours! Please don't hurt me. (Finn takes the Night Sword)
Finn: I won't hurt you. I'm gonna walk out on you so you won't kill me.
Bandit Princess: Fine. Fists.
Finn: Oh, sounds like your last Saturday night.
(Finn and Flame Princess do the fistfight until she strangles him.)
Bandit Princess: You're not gonna defeat me, jackass. (Finn chokes) I'm smarter than you, you know that, Finn? 'Cause I'm really smarter than you! (Finn strangles her)
Finn: You're knocked out, Bandit! (Knocks Bandit Princess out)
(Bandit Princess groans and falls to the floor unconsciously.)
Finn: You're dead for what you've done.
(Bandit Princess groans and dies. Cinnamon Bun yanks Finn's hair and throws him to the wall.)
Cinnamon Bun: Hey, Finn.
Finn: Oh, my God. Cinnamon Bun.
Cinnamon Bun: That's right. Cinnamon Bun's back. And I'm thinking humiliation. Do you remember? Do you remember what you did to me? You made me lose Flame Princess, now I'm gonna make you lose her. How's that sound, Mertens?
(Finn punches Cinnamon Bun as he turns into Fire Finn fights him until he aims his gun at him.)
Cinnamon Bun: Go ahead. Use it, Finn. It's not a bad way to go. There's many darkest moments in your life.
(Fire Finn remembers losing his arm in Citadel, getting his arm back, losing his arm again at the beach where Grass Sword and Finn Sword turn into Fern, and turning into fire until Fire Finn throws his gun down and fights him again. Fire Finn screams and punches Cinnamon Bun several times as he knocks him to the wall. Cinnamon Bun groans in pain as Finn spits on his face. Flame Princess sees Finn as she hugs him and takes him outside. Cinnamon Bun points his gun at Finn.)
Cinnamon Bun: Finn! (Laughing) You should've killed me.
(Fire Finn looks at his gun in his pocket.)
Fire Finn: Wait for me outside.
Flame Princess: All right.
(Flame Princess runs outside as Fire Finn fights Cinnamon Bun. Cinnamon Bun kicks Fire Finn in the head as he stabs him with the Night Sword. Fire Finn groans in pain.)
Cinnamon Bun: You chose Flame Princess instead of being single? You bring shame upon us all, Finn.
(Fire Finn growls and roars as he throws the Night Sword out and kicks Cinnamon Bun to the wall as he groans. Ice Queen attacks Finn as she strangles him.)
Ice Queen: Hello, Finn. I'm the Ice Queen.
Finn: We have one last villain.
(Finn punches Ice Queen as he fights her until she strangles him again.)
Ice Queen: You son of a bitch! Die! I'm gonna choke my million bucks out of you! You're gonna die! (Finn puts a VX poison gas pearl in her mouth)
Finn: Eat that, you bitch! (Punches Ice Queen in the mouth)
(Finn stands up as Ice Queen spits the poison gas pearl out of her mouth, choking and gasping. She groans then she dies.)
Cinnamon Bun: (Mumbles and wakes up) What... What happened? Is this a dream?
Finn: Cinnamon Bun!
Cinnamon Bun: Oh! It's good to see you, Finn.
Marceline: Well, this calls for the good side.
(Marceline walks to Finn and Cinnamon Bun.)
Cinnamon Bun: Marceline?
Marceline: Oh, my friend. (Hugs Cinnamon Bun)
Finn: It's a long story. You'll come with us.
Cinnamon Bun: I don't understand. I thought...
Marceline: I know. Finn spared your life.
Cinnamon Bun: Of course, he did.
Marceline: Yes, he did. Let's walk outside so we can celebrate. But you've been a jerky hog. You shouldn't be loving Flame Princess. Because Finn loves her so much.
(Finn, Marceline, Bandit Princess and Cinnamon Bun walk outside the rocket as Finn strangles Bandit Princess and takes her to the cliff.)
Bandit Princess: Wait! Let me go! Please, I'll do anything.
Finn: You will?
Bandit Princess: Yes, anything. Let me go. It won't be a brutality.
Finn: Wrong, Bandit Princess. This is not a brutality. This is a fatality!