Japan

In the deadly fights and riots of the Shimabara Revolt against Christians, eighteen thousand rioters are exterminated. Shiro, the leader of the revolt is beheaded and his head put on public display, but that night, as the thunder roars, he is the first to be reincarnated and plans to burn the country with the flames of his hatred and anger. Powered by black magic he calls out the dead Lady Hosokawa, and the two gather the support of a master swordsman, a monk-spearman, and a ninja. Elsewhere, the shogun takes a fancy to Otama whose spirit is possessed by Lady Hosokawa. Violence surrounds the relationship. The shogun first murders Otama's servant girl, and then shows sign of madness. The Shogun's fencing instructor, Tajima, senses the evil in Otama and determines to kill her. At the castle he is confronted by the monk-spearman, but manages to kill him before his own death. Then the fencing instructor reincarnates and teaches his son Jubei the art of swordmanship. Jubei challenges the master swordsman to a fight and closely wins. Jobei rushes to the castle where his father and Shiro stand in his way...