Hoping to overthrow his brother as ruler of the planet Metropolis, the evil Graal enlists the help of the insane Dr. Kraspin, who has invented a chemical capable of turning an ordinary person into a perfect soldier. They test this chemical on the pilot Golob, turning the unsuspecting victim into a mindless but indestructible automaton possessing superhuman strength. The people of Metropolis must somehow outwit Graal before he can create an army of these soldiers, or their planet will be destroyed.
Richard Kiel
Corinne Cléry
Barbara Bach
Leonard Mann
Arthur Kennedy
Ivan Rassimov
Massimo Serato
Marco Yeh
Venantino Venantini
Vito Fornari
José Quaglio
Attilio Duse
Ottaviano Dell'Acqua
Larry Dolgin
Hal Yamanouchi
Milla Johansson