Roberto, a 10-year-old boy, is drawn to music. An old organist discovers his gifts, and begins his musical education which will lead him to the head of an orchestra.

Submarine disaster drama made under the auspices of Mussolini's department of defense. During maneuvers a submarine collides with a surface vessel and drops to the ocean floor. The crew have thirty hours' worth of air to get it back to the surface.

1875. After completing her studies in boarding school, the young Duchess Anna Castellani, returns home and meets by chance a friend of her father, a count much older than herself.