Chaena is the commander of a spaceship from the constellation Hydra, which has crashed on the island of Sardinia.
An Earth scientist, some technicians, their companions, and some Asian agents (they deny being Chinese because the Chinese cooperate with the Americans) are abducted by the aliens and forced to repair the ship.
With the ship repaired, the aliens decide to take the humans to Hydra for the purpose of genetic research, but while in flight, the humans mutiny.[1]
Once in space, the film uses stock special-effects footage from Toho Studio's films Invasion of Astro-Monster and Gorath to depict a pursuit of Chaena's ship and an ecological catastrophe on Earth.
In the fall of 1977, to quickly capitalize on success of Star Wars, the film was dubbed in English and released in the United States under a new title. The English dub included references to "Star Fleet", "Star Fleet Command", "Warp Speed", and "Impulse Drive", as used in the Star Trek television series.
Home release
The film was released as a double movie pack with Battle Beyond the Sun.[3] It was also released in 2000 on Blu-ray.[4]
