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.

• Toei Company
• Teruo Yoshida
• Yukie Kagawa
• Teruko Yumi
• Mitsuko Aoi
• Michiko Kobata
• Yumiko Katayama
• Kei Kiyama
• Reiko Mikasa