A young Jewish priest Joseph Ben Mattahias is sent to Rome to fulfill a minor, but impossible, diplomatic mission. After the unexpected success, he returns to Rome again with another, secret, assignment. But from the influence there, he gradually sinks into a life of Roman debauchery. His fortune changes when he returns to Judea and appointed the Governor of Nothern Command, which gives him the first taste of power. Seeking more, he betrays his troops...