When her sweetheart Bruno joins the Italian army, Gina, bored by her lack of social life, weds Tullio. She comes to regret her decision when Tullio proves to be a Nazi collaborationist. Casting her lot with the Resistance movement, Gina is forced into a difficult decision when the safety of ex-lover Bruno is endangered by the treachery of Tullio.

An American prisoner, hidden by some Umbrian farmers, meets, drunk, with a German soldier who is also drunk. The two believe that the war is over and embrace each other emotionally. But it is not so and soon the cannon will thunder. Uncle Tigna, who was hiding the prisoner and two of his companions, will fall victim to the Nazis.