The German occupation is in full swing. Marcel, a famous singer at Levalle's, grew up on the wrong side of the tracks and now leads a complicated life. Juggling his common-law wife and his mistress keeps him as busy as his career. But then disaster strikes. Louis Gérard, the man who discovered him, is murdered, and Levalle's shuts down. Jobless, Marcel ends his relationship with his wife. He can't see his mistress because her husband is home on leave. Drunk and disorientated, roaming the streets after curfew, he runs into what could be serious trouble.
Jürgen is a young German lieutenant, a pacifist who secretly hates the Nazis and, just as secretly, has admired Marcel from afar. When he sees Marcel in need, he doesn't hesitate to take him home.
Despite Marcel's initial suspicions, he and Jürgen soon form a deep bond as Marcel fights his demons to rebuild his shattered career. All the while, the Liberation approaches, bringing tragedy and glory in equal measure. Hopeless? Probably. After all, neither of them is supposed to fraternize with the enemy, yet they learn to respect and love each other anyway.