Deep in debt, Madame de sees no other way out than to sell her heart-shaped diamond earrings, a gift from her husband the day after their wedding. The jeweler, known to the family, swears to keep it a secret. The following week, at a ball, Madame de, completely distraught, announces the loss of her jewelry. The jeweler, after reading about it in the newspaper, feels compelled to seek out Monsieur de and, asking for discretion, shares the story. Monsieur de acquires the earrings once again—and it won't be the last time. Louise de Vilmorin tells the enchanting tale of Madame de and reveals the behind-the-scenes of the French aristocracy, where infatuations and social obligations lead to astonishing actions.