Stanislas Graff, a powerful industrialist, is kidnapped one morning from in front of his building by a commando of gangsters. So begins a nightmare where he's humiliated, abused, and treated inhumanely. Although he resists, allowing his kidnappers no hold over him, he accepts everything without rebelling or any kind of cry or complaint; he responds with dignity to barbarity.
Cut off from the world, receiving only snippets of news from his jailers, Graff can't understand why no one will pay the ransom that would free him. Outside, his world slowly collapses when his true nature is revealed.