A deeply disturbed and epileptic young man benignly decides to murder other members of his dysfunctional family for altruistic reasons.
An Italian prison official's wife is kidnapped, and the kidnappers demand that a notorious prisoner be released in order for the man to get his wife back. He gets the man released - but then kidnaps him himself, in order to ensure that the man's colleagues don't kill his wife. Enraged, the gang sets out to free their compatriot and kill the man who took him.
Determined to survive at any price, Edith, a young Jewish woman deported to an extermination camp, manages to survive by accepting the role of kapo, a privileged prisoner whose mission is to ruthlessly guard other prisoners.