Napoleon Bonaparte crowns himself emperor and fights the English, Austrians and Russians in 1802.
After the death of her husband, Christine realizes she has possibly wasted her life by marrying him instead of the man towards whom, in her youth, she had a stronger inclination. To overcome these dreary thoughts, she decides to find out about him and the other men who danced with her during a ball that was a turning point in her life, many years ago. She pays a visit to those forgotten acquaintances one after the other; Christine is not only surprised to see how they have fared, but also discovers the impact she had, unknowingly, on the feelings and the destiny of these persons.
François Donge, a rich industrialist and womaniser, meets a girl nicknamed Bébé who he marries. Ten years later, poisoned by his wife and dying in hospital, he recalls his married life and understands how his wife who adored him suffered from his many affairs and indifference.
