After the death of his grandmother and only remaining relative, Shinakawa Raizou moves in with the mysterious Mitou family as their housekeeper. He soon learns the Mitou family's secret: the Mitou can use great...

Somewhere in the desert lies the world's greatest treasure: the 12 Rings of the Dead, the only source of the mysterious substance Zombie Powder, which can raise the dead and grant eternal life. Into this world...