Ice King and Marceline 996 years ago.
Jake has a hard time figuring out how to be a father; Finn makes an alter-ego to hide himself from grateful fans.
An unlikely group must work together to escape a dungeon; Finn and Jake find new developments in the Lemon Earldom.
After receiving miniature versions of his friends, Finn experiments with their lives; when the princesses tire of Ice King's Fionna and Cake stories, Marceline lends him a hand.
Finn's hat comes to life; Finn and Flame Princess have more relationship difficulty.
When Finn and Jake get lost in the badlands, they are saved by the ex-Goblin King; Ice King and Marceline 996 years ago.
Ice King develops a computer virus to delete everyone except himself and Princess Bubblegum; Jake builds a pillow fort while Finn ventures to a different world.
Ice King gets super jealous when he learns that he was not invited to the Princess Potluck; Finn and Jake meet a horse with the power to make sad people happy.
Jake reunites with the old gang to save Jake Jr. from a bad crowd.
After being thwarted again, Ice King decides he has had enough of kidnapping; Finn and Jake build a time machine; Princess Bubblegum helps Cinnamon Bun conquer his fear of the dark.
LSP is robbed, but faints before Finn and Jake can get information on the crime; Starchy asks Princess Bubblegum to use magic to cure him, but she does not believe in magic.
Tired of being used as a shield, Jake convinces Finn to trade places; In order to save BMO, Finn and Jake disguise themselves as MOs to infiltrate the MO factory.
Jake starts to turn lumpy after being bitten.
Finn and Jake go on a quest for a book.
The gentle Tree Trunks joins Finn and Jake on a quest for the legendary Crystal Gem Apple, but Finn doubts she has what it takes to be a hero.
Finn and Jake hire businessmen to take over their hero duties and spend their time playing games and eating ice cream, but when the businessmen go too far, Finn and Jake must come to the rescue.
Finn gets caught up in trying to make everyone happy.
Jake and Finn are kicked out of their tree house.
Finn and Jake encounter the City of Thieves; Finn tries to distract the Candy Kingdom at a slumber party.