As alien invaders plot to conquer the Earth, two Boy Scouts steal a mini-submarine and discover Gamera in their midst. Transported to the alien's spaceship, the Scouts are menaced by the evil inhabitants, including Viras, a squid-like monster that grows to colossal size to battle Gamera.

Genres

Cast

Kōjirō Hongō

Scout Master Mr. Shimida

Tôru Takatsuka

Masao Nakaya

Carl Craig

Jim Morgan

Michiko Yaegaki

Mariko

Peter Williams

Dr. Dobie

Kōji Fujiyama

Self-Defense Force Commander

Mari Atsumi

Junko Aoki

Junko Yashiro

Masako Shibata

Shō Natsuki

Doctor 3

Genzō Wakayama

Boss (voice)