Aliens from the constellation Hydra crash-land on the island of Sardinia. A prominent scientist, his daughter, several young technicians, and a pair of Oriental spies are taken hostage by the beings so they can use them to repair their spaceship's broken engine. With that done, they take off towards their home planet, taking the earthlings with them. However, the humans attempt to mutiny against their captors, inadvertently sending their tiny spaceship hurtling into the infinite beyond...
Cast
Leonora Ruffo
Kaena
Mario Novelli
Ingegner Paolo Bardi
Roland Lesaffre
Prof. Solmi
Kirk Morris
Belsy
Gordon Mitchell
Murdu
Alfio Caltabiano
Artie
Leontine May
Luisa Solmi
Nando Angelini
Ingegner Morelli
Giovanni De Angelis
Giulio
Mirella Pamphili
(credit only)
John Sun
Dr. Chang
Antonio Ho
Chinese Secret Agent
John Chen
Chinese Secret Agent
Pietro Francisci
Himself (uncredited)
Renato Montalbano
The Doctor at the casualty department (uncredited)
Gianni Solaro
The Director of the Research Institute (uncredited)
