On a small island in the Tyrrhenian Sea there lives a boy as innocent as a seabird. Arturo's mother is dead; his father is away. Black-clad women care for him and give him the freedom to come and go as he likes. Then the father returns with a new wife, Nunziata, a girl barely older than Arturo. At first hatred and contempt are all the boy feels for his stepmother. In time, Arturo and Nunziata recreate the tragedy and passion that are as old as the history of men and women.