Finn and Princess Bubblegum accidentally create Candy Zombies, and summon all the Candy People to a slumber party to protect them.

Finn and Jake travel to Lumpy Space in order to cure Jake of the lumps after he is bitten by Lumpy Space Princess at Princess Bubblegum's Mallow Tea Ceremony.

The Ice King abducts Finn and Jake and takes them to his collection of kidnapped princesses. They must free the princesses before the Ice King can marry one of them.

The gentle elephant 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.

To prove their skill to Princess Bubblegum, Finn and Jake begin a quest to retrieve the Enchiridion, a legendary hero's handbook, which they must endure many trials to receive.

Finn and Jake find a small, fun-loving creature and adopt it, but soon discover the harm they have done by taking it from its habitat.