When the first manned flight to Venus returns to Earth, the rocket crash-lands in the Mediterranean near a small Italian fishing village. The locals manage to save one of the astronauts Colonel Calder, the mission commander. A young boy also recovers what turns out to be a specimen of an alien creature. Growing at a fantastic rate, it manages to escape and eventually threatens the city of Rome.
Nick Cochran, an American in exile in Macao, has a chance to restore his name by helping capture an international crime lord. Undercover, can he mislead the bad guys and still woo the attractive singer/petty crook, Julie Benson?
Taggart's family is slaughtered by a rival rancher. Taggart mortally wounds the rancher and kills his son. Before he dies the rancher hires three bounty hunters to avenge him with the promise of $5000 as a reward. Taggart must flee into Apache territory to escape the wrath of the trio of hired killers.
