Haru Glory is a sixteen-year-old living on Garage Island who fishes up a strange creature named Plue. Soon after, an old man named Shiba names Haru the second Rave Master and entrusts him with Plue, a sword, and the one holy stone called Rave still in his keeping. Haru sets out across the mainland to find the four scattered Rave stones and bring down Demon Card, the criminal organization behind the world's misery, joined along the way by an amnesiac girl named Elie.