Discover 4 famous Japanese murderers: Takahashi Oden, the last woman beheaded in Japan, Sada Abe, a crazy lover, Kunihiko Kodaira, a rapist-killer and finally, the Toyokaku case, a woman who did everything to own a hotel.

After escaping from an insane asylum, a medical student assumes the identity of a mysterious dead man, who appears to be his doppelganger, and gets lured to a sinister island ruled by a mad scientist and his malformed men.