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.
Steve Reeves
as Ercole (Hercules)
Sylva Koscina
as Iole, Daugher of Pelias
Fabrizio Mioni
as Jason
Gianna Maria Canale
as Antea, Queen of the Amazons
Arturo Dominici
as Eurysteus
Mimmo Palmara
as Iphitus, Son of Pelias
Lidia Alfonsi
as The Sybil
Gabriele Antonini
as Ulysses
Aldo Fiorelli
as Argos
Andrea Fantasia
as Laertes
Luciana Paluzzi
as Iole's Maid
Ivo Garrani
as Pelias, King of Iolcus
