ALL-NEW ARC! ALL-NEW JUMPING-ON POINT! Magic Man causes mayhem in this brand-new adventure (time!) by cartoonist/writer Nick Winn (Bloody Mary) and stellar artist John P Golden (Over the Garden Wall)! More at 11! Why was Magic Man using Finn's robotic doppelganger to steal important artifacts from across Ooo? To impress the one and only Betty Grof, of course! Now a resident of Mars, Betty used to travel Ooo with Marceline and one Simon Petrikov—better known as Ice King! But this family reunion takes a turn for the worse when Magic Man's jealousy gets the better of him and he accidentally—maybe—starts the apocalypse . . . A sleight of hand turns sour, and a TEST OF HEROES begins! Can Finn, Jake, Marceline, Princess Bubblegum, and more of your favorite concerned citizens band together to save their home? One thing's for sure—after this exam, Ooo will never be the same . . .