An alien vessel manages to break the earth defense systems. Captain Layton is sent to investigate and find the invaders. Together with friends from the planet Ganymed he discovers the enemies in a hidden underground city on earth.

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Main Cast: John Richardson, Yanti Somer, Walter Maestosi, Gaetano Balestrieri, Gisela Hahn, Aldo Canti, Massimo Bonetti, West Buchanan, Lucio Rosato, Malisa Longo

Director: Alfonso Brescia

Writers: Massimo Lo Jacono, Giacomo Mazzocchi

Editor:

Cinematographer: Silvio Fraschetti

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