Finn is about to fall head first into an adventure so intense, he'll never remember it! After trying to take on the Mnemonoid, Finn wakes up in the future with no recollection of what has happened in the time jump. It's up to his pals Jake, Princess Bubblegum, and Marceline to help Finn remember how to beat this mean dude before he forgets everything else.

"Originally published in single magazine form as Adventure Time no. 30-34"--Indicia.

Marcelzine, intro / illustrated by Kat Philbin -- Cool Bear the bear / illustrated by Missy Pena -- Peppermint Bark recipe / illustrated by Becca Tobin -- Hourly comics / illustrated by Liz Prince -- Chicken experiment comics / illustrated by Yumi Sakugawa -- The Manbabe's lament / illustrated by Carey Pietsch -- My ca-razy day / illustrated by Jesse Tise -- Favorite kissing spots / illustrated by Ian McGinty -- How to leave me alone / illustrated by T. Zysk -- Finn the superhuman / illustrated by David Cutler -- Postscript / illustrated by Shelli Paroline & Braden Lamb -- Chapters two through five / illustrated by Shelli Paroline & Braden Lamb.