The most hidden side of Luchino Visconti goes by the name of «Resistance». Communism was for Visconti a secular religion to be lived as a mission. The last of the aristocrats, Catholic and homosexual, he joined the Italian Communist Party (PCI). The documentary follows step by step his work on the film Days of Glory in 1944, during which Visconti filmed the trial of former Police Commissioner of Rome Pietro Caruso and the execution by firing squad of Caruso, Scarpato and Peter Koch. In the background, the deep friendship with Togliatti and the creation of the film The Earth Trembles, which was funded by the PCI but emptied both the party chest and that of Visconti.