A group of rich young intellectuals hiding from the war in rural Italy play at being partisans when some disbanded soldiers and some refugees ask them for shelter in their villa. The young and aristocratic Andrea strikes up a friendship with a peasant girl, Lucia. Then the Germans suddenly appear, looking for the real partisans, and the time comes for serious decisions.

In the year 1870 Rome, then governed by the Pope, was captured by the Italian General La Marmora's troops. After the armistice, the Italian soldier Alfonso killed a Pope's soldier, the son of Don Prospero. Then he sought refuge in the house of Don Prospero himself. There Costanza and Olimpia, respectively the wife and the daughter of Don Prospero, fall for him. Then Gustavo, who knew that Alfonso had killed Don Prospero's son arrived in the house... Some things are going to happen