This sequel to The Robe finds freed Greek slave Demetrius forced into gladiatorial combat at the behest of emperor Caligula (Jay Robinson). The depraved Caligula covets Christ's hallowed robe -- now in Demetrius' hands -- and works in concert with the seductive Messalina (Susan Hayward) to manipulate Demetrius and gain possession of it. After falling victim to their machinations, Demetrius suffers a crisis of faith that will decide his destiny.