A strange meteor lands in Japan and unleashes hundreds of insect-like "Legion" creatures bent on colonizing the Earth. When the military fails to control the situation, Gamera shows up to deal with the ever-evolving space adversary. However the battle may result in Gamera losing his bond with both Asagi and humanity.

• Tokuma International
• Nippon Television Network Corporation
• Toshiyuki Nagashima
• Miki Mizuno
• Tamotsu Ishibashi
• Mitsuru Fukikoshi
• Ayako Fujitani
• Yukijiro Hotaru
• Zen Kajihara
• Tomorowo Taguchi