Finn and Jake finally get to have the ultimate out of body experience--LITERALLY. It’s a new day in Ooo when its greatest heroes find themselves wandering the Earth as bewildered ghosts! It only takes a few misunderstandings and a couple of ghost hunters before this adventure goes haywire and leads Finn and Jake to the great beyond and back again. Also featuring the story of Carl the Gem, and the history of Ooo through his eyes.