Fifty years before the story begins, the dark stones known as Dark Bring — granting terrifying power to those who possessed them — were wielded by the Raregroove Kingdom to wage war on the world. The Symphonia Kingdom fought back with Holy Bring, and their champion Shiba, the first RAVE Master, attempted to destroy Sinclaire, the source of all Dark Bring, with the Decaforce Sword. The resulting explosion — the Overdrive — wiped out a tenth of the known world. Shiba and his guardian Plue survived, but the RAVE stones scattered across the globe. In the present, teenager Haru Glory is fishing off Garage Island when he pulls Plue from the water by accident. Events spiral quickly: Shiba arrives to reclaim Plue, the criminal organization Demon Card attacks with Dark Bring of their own, and Haru discovers he is the second RAVE Master. Armed with the Decaforce Sword and accompanied by Plue, he sets out to gather the scattered RAVE and end Demon Card's ambitions.