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...
as Kaena
as Ingegner Paolo Bardi
as Prof. Solmi
as Belsy
as Murdu
as Artie
as Luisa Solmi
as Ingegner Morelli
as Giulio
as (credit only)
as Dr. Chang
as Chinese Secret Agent
as Chinese Secret Agent
as Himself (uncredited)
as The Doctor at the casualty department (uncredited)
as The Director of the Research Institute (uncredited)
