Laurent Bertal is a successful attorney who lives in Berne with his beautiful and adoring wife Evelyne. Theirs appears to be the perfect marriage, but while on holiday in Italy Evelyne falls in love with a young Frenchman, Rémy. While Evelyne is profoundly unsettled by this romantic entanglement, Rémy regards it as a mere distraction and soon heads back to Paris where he lives with his mistress, Marion. One day, Evelyne is overjoyed when she receives an invitation from Rémy to spend a weekend with him in Paris. The morning after their first night together in Rémy’s apartment, Evelyne accidentally breaks a glass ornament in the shape of a castle. The incident proves to be an omen of bad luck.