Full title reads: "CAR RACING IN ITALY - Nuvolari wins chief event on Naples Circuit."
Start of Princess of Piedmont Cup car race on Naples Circuit - 124 miles. A man fires a gun and cars start racing.
Various shots of the cars racing through the streets - quite curvy route. Prince Umberto of Italy watching the race from Royal box. More shots of the race with people watching from sides of tracks (road). A car tuned on its roof on the road. People running to help. More shots of the race. Close up shot of the winner, Nuvolari, in his car.