A terribly wooden Kirk Morris is "Maciste" in this very poor Peplum affair. He helps the young king "Ario" (Demeter Bitenc) lead his people from their homes - as a volcano is about to erupt - straight into the middle of a battle between two warring nations. Soon he is caught up in intrigues and has to rescue "Queen Amoa" (Laura Brown) from the clutches of her patricidal suitor - and the aptly namever mais...