When a giant stone statue on Wester Island is disturbed, the legendary monster Jiger appears and heads for Japan. Gamera tries to stop this new rival, only to be injured when Jiger lays eggs inside of him. As two boys in a submarine go on a dangerous quest inside of Gamera's body to save him, Jiger threatens the Expo '70 world's fair in Osaka.
Unfortunately the movie Gamera vs. Jiger is not yet available on HBO Max.
| Writing | Nisan Takahashi | Writer |
| Directing | Noriaki Yuasa | Director |
| Production | Hidemasa Nagata | Producer |
| Camera | Akira Kitazaki | Director of Photography |
| Production | Masaichi Nagata | Executive Producer |
| Sound | Shunsuke Kikuchi | Original Music Composer |
| Art | Akira Inoue | Production Design |
| Editing | Zenko Miyazaki | Editor |
| Crew | Yuzo Kaneko | Special Effects |
