Finn and Jake

Synopsis
Finn (the gender-swapped version of Fionna) puts up with the sudden courtship of Princess Bubblegum (the gender-swapped version of Prince Gumball) while taking advice from his partner Jake (the gender-swapped version of Cake) in dealing with ladies.

Plot
The episode opens with alternate versions of Fionna and Cake, using gender swapped characters. Finn and Jake are helping Princess Bubblegum decorate for the Biennial Bubblegum Ball when Princess Bubblegum asks Finn if he would like to go to it tonight with her "as pals." Their conversation is interrupted when Jake’s tail frizzes up,  sensing incoming danger. Finn rushes to the balcony and sees the Ice King coming down from dark clouds to kidnap Princess Bubblegum. He breaks into the castle, forms a slush beast around himself and goes after Bubblegum. Jake turns into a morning star that Finn uses to smash the slush monster, with Ice King and Bubblegum inside. The room fills with snow, and Princess Bubblegum appears unharmed, but Ice King has mysteriously vanished. Princess Bubblegum then asks Finn to "go out" with her, and Jake agrees for him to meet her again in an hour at the Castle Gardens.

At the Tree Fort, Finn and Jake argue over whether or not Bubblegum asked Finn on a date. Jake insists that dhe did, and decides to come along to help Finn, taking his dulcimer with him as a “conversation starter” (the alternate instrument to Cake's Viola, apparently). Finn reluctantly agrees to this, and they go meet Princess Bubblegum at the Castle Gardens. Princess Bubblegum is joined by Lady Rainicorn. Princess Bubblegum gives Jake a satchel of dog food that Lady Rainicorn picked herself, and gives Finn a cool watch with a retractable crystal sword inside it. Finn is much more excited by the sword than the watch.

The group rides off - Finn riding on Jake's back, and Princess Bubblegum on Lady Rainicorn. Jake urges Finn in an undertone to tell the Princess that she´s "pretty." Finn doesn't like the idea, and Jake insists that "ladies like to hear that they're pretty!" Princess Bubblegum interrupts to challenge Finn to a race to Marshmallowy Mweadows. The group races there, and Finn and Princess Bubblegum jump off their friends and into the flowers. Suddenly Princess Bubblegum dives under the flowers and disappears. Panicking, Finn dives after her and pulls her out. Bubblegum explains she saw a pearl pygmy skull in the flowers that reminded him of Finn's sparkling eyes. Finn giggles, his eyes growing wide and glimmering like Bubblegums's. Later the group flies off on Lady Rainicorn, and Finn sings about Bubblegum while Jake plays along on his dulcimer. The flight ends when Jake and Lady Rainicorn drop Finn and Princess Bubblegum off in a grassy field, leaving them alone together. After lying on the ground talking for a while, Princess Bubblegum asks Finn to come to the ball with her as his boyfriend.

Finn rushes back to the Tree Fort and excitedly yells to Jake that he is now going to the ball as Bubblegums’s boyfriend. After Jake dresses him up in a fancy suit, Finn asks how he’s supposed to fit weapons in his pocket. Jake says she doesn't need weapons at a ball, but Finn takes with him the retractable crystal sword that Princess Bubblegum gave her anyway. When Finn and Jake get to the ball, Princess Bubblegum takes Finn to her room, decorated with candles and rose petals, and locks the door. He becomes flustered and, blushing, backs away when she begins to take his shirt off. A drop of water lands on his shoulder, he looks up to see the real Princess Bubblegum trapped inside a giant icicle on the ceiling. The fake princess is revealed to be Ice King, now taking off his disguise.

Enraged by the deception, Finn takes out the crystal sword to fight, but the sword is another one of Ice King’s tricks and turns into a ball of ice around Finn’s hands. Jake hears noises from downstairs and senses Finn is in trouble. Undaunted, Finn uses the ice to beat Ice King over the head. Ice King pushes her off in burst of snow, which allows Finn to get close to enough to break Princess Bubblegum free. Ice King gets knocked down by the broken icicle pieces just before Jake bursts into the room. Seeing Finn standing next to Bubblegum in his torn suit, Jake jumps to the wrong conclusion and lunges at the princess. Finn stops Jake from hurting Bubblegum and tells him it was the Ice King all along.

Just then Ice King recovers and blasts Jake away from Finn with a torrent of icicles. Finn knocks his magic crown off, squelching his powers, and then punches him for "yanking her heart-guts." Jake then uses the crowns’s power to bury the Ice King in snow. Finn swats the crown off Jake's head, saying, "you'll catch his crazy!" The real Princess Bubblegum is impressed by Finn and asks him on a date, but he quickly turns her down. Finn decides he doesn't need a girlfriend because he knows who he is and that he isn't interested at the moment, but adds that she would give anything to date the Ice Queen. Jake agrees, saying "Ice Queen is the real deal!", and Lady Rainicorn appears and agrees too by tapping his front hoof in code. As he praises the Ice Queen, Finn's voice suddenly becomes the Ice Queens's as the scene changes to the real Ice Queen's throne room. She is lounging in an armchair and reading a fan fiction she wrote to Fionna and Cake, whose bodies are trapped in ice. Ice Queen closes the book, which has a picture of Finn kissing Ice Queen, and asks. "So, what did you think of the fan fiction I wrote about you guys?"

Fionna, who is the only one with his head not buried in ice, hesitates to respond. Ice Queen raises her hand with ice power threateningly and yells, "Tell me you thought it was good!" Fionna hurriedly placates the Ice Queen by praising the book.

Major characters

 * Finn
 * Jake
 * Princess Bubblegum
 * Ice King
 * Lady Rainicorn

Minor characters

 * Fionna
 * Cake
 * Ice Queen
 * Gunter
 * Marceline
 * Lumpy Space Princess
 * BMO
 * Snail
 * Candy People
 * Mr. Cupcake
 * Male Cinnamon Bun
 * Mr. Candy Cane
 * Lollipop Girl
 * Jelly Kinder
 * Gumball Guardian