Follows the adventures of a group of friends, teddy boys and rock and roll chicks whose crazy, fun-loving habits inspire jiving from some of Rome's citizens, and bitter complants from others which inspire a group of corrupt officials determined to a bring the group down.

Duke Altichieri rises to power, after his associate, Cpt. Alberico, kills governor Conte Filippo della Scala. 10 harsh years of tyranny follow, until a mysterious figure appears out of nowhere, helping people in their struggle against the regime. He is known by the name Red-Masked Prince, but who is he?