Merope

Inspector Rizzo and Marshal Caputo go to Egypt and look for Professor Cerullo, who is missing.

A poor laborer, Zilio, wants to marry Betìa, the daughter of a rich peasant woman. After number of refusals Zilio is desperate, but Nale, a young lover, combines a frontal marriage between the two, convinced they can take advantage of it.

Mario, a rich and eccentric war hero befriends Marco, a loner with a sailboat, and takes him home to meet his estranged wife Cleofe and sexually repressed sister in law Matilde. Mario confesses his love for Matilde and so ensues a love triangle.

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.