A moon base is destroyed by a spaceship from Zigra which is looking to take over the planet earth to use its oceans for its ocean-dwelling denizens. Gamera must once again come to the aid of the human race while all of Japan roots him on.

• Dainichi-Eihai
• Daiei Film
• Eiko Yanami
• Reiko Kasahara
• Mikiko Tsubouchi
• Kōji Fujiyama
• Isamu Saeki
• Shin Minatsu
• Arlene Zoellner
• Gloria Zoellner