The all-powerful Dark Stone - a magical stone and ruler of the dark side - awakens after a 50-year respite. When it falls into the hands of the evil Demon Card, the world is in terrible danger.

A sacred stone called Rave and its master Shiba are the only defense against the Dark Stone's evil powers. Yet, Shiba loses control over Rave after he is mortally attacked by a Demon Card assassin. With the dark side looming, a boy called Haru may be the world's single hope of revitalizing Rave and escaping the clutches of evil.

Story and art by Hiro Mashima.