Claudia and Anna join Anna's lover, Sandro, on a boat trip to a remote volcanic island. When Anna goes missing, a search is launched. In the meantime, Sandro and Claudia become involved in a romance despite Anna's disappearance, though the relationship suffers from guilt and tension.
Time after time, soldiers of the Italian Army are forced to leave their mountain trenches in attempts to storm an enemy fortress, always with the same disastrous results. As casualties mount, indignation spreads among the rank and file. Disturbed by his superiors' decisions, Lieutenant Sassu is led to question the purpose of war and reconsider where his real duties lie.
In his delirium from his return from war, Francesco Bernardone goes back in his memories to the days when he lived for parties and carnal pleasures. He slowly recovers, but after the illness he is no longer the Francesco that everybody knew. Instead of spending hours in taverns, he meditates on the beauty of God's creatures, soon renouncing his riches and his family with plans to rebuild an abandoned church and his life.
