Claou, a young and watery planet, is shaken by kingdoms that wage war over sparse island territories. Among the inhabitants is a rare race of bodyguards known as MetalSingers—people with the ability to manipulate metal with their minds.

One evil man, Bion the Butcher, and his Bone Army set out to conquer all of the kingdoms, but a family of Black MetalSingers, through honor and ancient alliances, may be the only force strong enough to stop evil and free the planet from enslavement.

As the hordes of wickedness outnumber the righteous few, there is one thing to always remember: only in darkness does the light shine brighter.