Princess Bubblegum and Finn are doing experiments in a graveyard when they accidentally create candy zombies.... / Jake starts to turn lumpy after being bitten by Lumpy Space Princess! It’s up to Finn to find a cure that will save his friend.

Finn and Jake are kidnapped by the Ice King... can they save the captured princesses and break them out of prison before he marries one of them? / When elephant Tree Trunks joins Finn and Jake on a quest for the crystal apple, Finn learns heroes come in all.

"Enchridion" - Princess Bubblegum tells Finn about a book for heroes called "The Enchiridion". They embark on a quest for the book, and are tested at every turn. "The Jiggler" - Finn and Jake happen upon a jiggly creature who follows them home to their tree house. After some troubles taking care of the Jiggler, they must find a way to return him home to his mother before it's too late.

There’s a new guy in the Candy Kingdom, and his name is Ricardio. Finn is super jealous and believes Ricardio’s intentions toward Princess Bubblegum are less than honorable! / Finn and Jake become fatter and lazier, allowing businessmen to do everything for them…including being heroes!

Jake tries to get Lady Rainicorn and Finn to become friends so he doesn’t have to split his time between the two... / When Finn tries to help a sad mountain, he ends up upsetting someone else. Trying to help everyone, in the end…he risks helping no one. Except maybe himself!

Finn single-mindedly pursues the powers an old wizard offers him, until he learns that with great power comes...yeah yeah yeah...all that. / Marceline shows up and informs that the tree fort was once hers and she wants it back.