At the end of the First World War, Bernard Jacquelain returns from the trenches a changed man. Broken by the unspeakable horrors he has witnessed, he becomes addicted to the lure of wealth and success. He wallows in the corruption and excess of post-war Paris, but when his lover abandons him, Bernard turns to a childhood friend for comfort. For ten years, he lives the good bourgeois life, but when the drums of war begin to sound again, everything around which he has rebuilt himself starts to crumble, and the future of his marriage and of his country suddenly becomes terribly uncertain.