Twin brothers were raised by wolves, revolt against tyranny in pre-Roman Italy and then come to a parting of the ways as they lead their people toward the founding of a new city, the founders of Rome.

Don Gregor, the son of famous plastic surgeon Dr. Boris Gregor, begins to hang around with young criminal Vic Brady and carry a gun. The pair attempt an armed holdup, and when things start to go wrong Gregor accidentally kills a night watchman. Fearing that Gregor plans to turn himself in, Brady kills him and blackmails Dr. Gregor into giving him a new face.

In this melange of characters and events from separate mythological stories, Hercules, demigod and superman, arrives in the ancient Greek kingdom of Iolcus to tutor Iphitus, son of king Pelias; immediately on arrival, he falls in love with the king's delectable, briefly clad daughter Iole. Before he can win her, he must succeed in a series of quests, in the course of which he teams up with Jason, true heir of Iolcus, whom he accompanies on the famous voyage of the Argonauts.