Gamera escapes from his rocket enclosure and makes his way back to Earth as a giant opal from New Guinea is brought back to Japan. The opal is discovered to have been an egg that births a new monster called Barugon. The creature attacks the city of Osaka by emitting a destructive rainbow ray from his back, along with a freezing spray capable of incapacitating Gamera.
Unfortunately the movie Gamera vs. Barugon is not yet available on Disney Plus.
| Directing | Shigeo Tanaka | Director |
| Writing | Nisan Takahashi | Writer |
| Production | Masaichi Nagata | Producer |
| Camera | Michio Takahashi | Director of Photography |
| Editing | Tatsuji Nakashizu | Editor |
| Crew | Noriaki Yuasa | Special Effects |
| Sound | Chūji Kinoshita | Original Music Composer |
| Crew | Kazufumi Fujii | Special Effects |
| Visual Effects | Noriaki Yuasa | Special Effects Supervisor |
| Art | Atsuji Shibata | Production Design |