In the continuing saga of the Corleone crime family, a young Vito Corleone grows up in Sicily and in 1910s New York. In the 1950s, Michael Corleone attempts to expand the family business into Las Vegas, Hollywood and Cuba.

Cuban Bandleader Ricky Ricardo would be happy if his wife Lucy would just be a housewife. Instead she tries constantly to perform at the Tropicana where he works, and make life comically frantic in the apartment building they share with landlords Fred and Ethel Mertz, who also happen to be their best friends.

Major Joppolo and his men are assigned to restore order to the war-torn Italian town of Adano. He has to manage getting supplies into town without interfering with troop movements, all the while dealing with colorful citizens of the town. One of his quests is to replace the bell which orders the town's life.