Merope

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

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.

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.

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.