Gaira, a humanoid sea beast spawned from the discarded cells of Frankenstein's monster, attacks the shores of Tokyo. While the Japanese military prepares to take action, Gaira's Gargantua brother, Sanda, descends from the mountains to defend his kin. A battle between good and evil ensues, leaving brothers divided and a city in ruins.

Genres

Cast

Kenji Sahara

Dr. Yuzo Mamiya

Kumi Mizuno

Akemi Togawa

Russ Tamblyn

Dr. Paul Stewart

Jun Tazaki

General Hashimoto

Kipp Hamilton

Singer

Yoshibumi Tajima

Officer Hirai

Nobuo Nakamura

Professor Kita

Hisaya Ito

Chief Izumida

Nadao Kirino

Lt. Col. Kazama

Ren Yamamoto

Saburo Kameda

Kōzō Nomura

General's Aide

Shōichi Hirose

Soldier