A French-American millionaire, his girlfriend and his war buddy try to grant his dying son's every wish.
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.
Spies from several countries try to find out what secrets are hidden in the mind of a young amnesiac girl who has appeared in Paris.
