Emperor Caracalla is ruling the Roman Empire with a rod of iron and it’s his excessive brutality that sees “Marcus” (Gordon Scott) forced into the life of a gladiator. Initially, he was a bodyguard for the fleeing princess “Nisa” (Wandisa Guida) before they were sold into their first unsavoury predicament. Their new owner “Valerio” (Roberto Risso) is a decent enough man, though, and even a bit keen on his new captive but before they can be freed the emperor orders the execution of his parents and so the couple are swiftly forced into a life of hard labour. The furious “Valerio” has sworn vengea...