What happens when Fionna and Cake end up in Ooo? They face a lot of troubles, well not Cake but Fionna...with Marcy. They end up together but what happens when Fi has to go back home? You'll have to wait and see.

Adventure time in High school? Could it get anymore exciting?! Yes it can! Drama, fights, and hate everywhere. Hearts will be broken and healed by the unexpected. And many secrets will be unfold. So stay tooned in this exciting book about Adventure time in High school!!! ._.