In the early days of Japan, the young princess Amaterasu who heads the Isanami clan, strikes tragedy. The parents of the teenager and her brother, Susanowo has been exiled to the forest. Since then, he lives like a beast, eaten by hatred. But a double threat will bring them closer together. Their mother, soverign of the kingdom of the dead, attaches their demons to them, and the all-powerful Himiko who reigns over the northern empire has gathered their elite soldiers to destroy the clan. The intelligent princess and the fierce warrior will have to unite their deifferences to survive on the path of shadows.