Astronauts investigate Planet X and encounter the Xiliens, who ask Earth’s people to help save their world from “Monster Zero”. As one astronaut forms a romance with a mysterious woman, he uncovers the Xilien’s true intentions.
- Runtime: 93 min
- Released: 29 Jul 1970
- Genre:Action, Adventure, Sci-Fi
- Starring: Nick Adams, Akira Takarada, Jun Tazaki
- Writer: Shin’ichi Sekizawa
- Director: Ishirô Honda
- Available countries: Japan, United States