Finn calls the Lord of Evil in order to reunite with his daughter, Marceline the Vampire Queen, but in the process, his plan backfires.
Finn and Jake are unable to sleep due to a frightening horse outside their window.
As the Ice King is mistaken for a decent person after shaving, he uses this to his advantage.
Finn is mocked by a gang of knights, prompting him to seek a magical armour that will gain him respect.
Finn ventures out into the woods to find a real story after failing to entertain a sick Jake.
Finn and Jake strive to locate a partner for a big snail in order for it to quit destroying their tree-house.
Finn is abducted, but Jake's limited attention span makes it unlikely that he will be rescued.
Jake pledges to live a nonviolent life just as a race of indestructible crystal-men kidnaps Finn and transports him to another realm.
Finn and Jake are entrusted with one of the most important tasks, which is to deliver and protect the Candy Kingdom's rarest pastry.
If Finn does not bring her the hair of a princess, an evil witch vows to destroy Jake.
Finn and Jake take advantage of Ice King's absence and sneak into his castle.
Jake tries to pretend to be a Rainicorn, in order to impress Lady Rainicorn's parents.
As Finn and Jake are tasked with guarding three magical beans, one wicked and two good, they decide to plant them to know the difference.
Finn becomes the new ruler of the Goblin people after overthrowing their king, but discovers that their peculiar ways are too tough to comprehend.
Finn, who is nervous about making a speech at Princess Bubblegum's science conference and BBQ, discovers a magical set of spectacles that transform him into the world's brightest being.
Finn and Jake find themselves caught inside one of BMO's video games.
Finn and Jake go to the land of the dead to bring Princess Bubblegum's favorite plant back to life after unintentionally killing it.
Finn believes that he has uncovered a clan of primitive humans living underground, after he thought that he is the last human remaining in the Land of Ooo.
Finn and Jake are caught in the midst of a murder case while travelling by train.
Jake and Marceline give Finn opposing tips on how to take Princess Bubblegum out on a date.
Finn and Jake must help a troop of naive, party-loving teddy bears that are trapped within a monster's stomach.
Jake's stretching abilities are put to the test in a magic wish-granting maze.
Finn and Jake set out to produce their own film, but their ideas of what that film should be are fundamentally opposed.
Finn and Jake go on the most dangerous quest of their careers, as the Lich, Ooo's most powerful manifestation of pure evil, is unintentionally released.
Despite the fact that the terrible Lich appears to be defeated, Finn and Jake feel worried about their victory due to its consequences.
As Marceline the Vampire Queen is against the idea of transforming Finn and Jake into vampires, she deceives them into believing that she did.