Michel, a young painter in poor health, enters the grounds of a château and faints when he sees a haughty young woman in the simplest of garb. The chatelaine, Eliane, takes care of him and calls in Pierre Fournier, a Parisian doctor. A disreputable Count Ostrowsky turns up to blackmail her. He is found murdered. But who's the killer? Pierre or Eliane? Quite simply Michel, who, before dying, showed his gratitude to the woman who had taken him in. Pierre and Eliane were living apart, but they were husband and wife. Such adventures unite them, this time, forever.