At the beginning of the 20th century, Claude Roc, a young middle-class Frenchman meets in Paris Ann Brown, a young Englishwoman. They become friends and Ann invites him to spend holidays at the house where she lives with her mother and her sister Muriel, for whom she intends Claude. During these holidays, Claude, Ann and Muriel become very close and he gradually falls in love with Muriel. But both families lay down a one-year-long separation without any contact before agreeing to the marriage. So Claude goes back to Paris when he has many love affairs before sending Muriel a break-off letter. At the end of the Nineteenth Century, the English teenager Ann Brown travels from Wales to Paris. There she befriends Claude Roc and invites him to visit her hometown, where she lives with her mother and her younger sister Muriel. When Claude arrives at her home, both Ann and Muriel become his close friends - but Ann pushes Claude towards Muriel and they fall in love with each other. However their mothers propose they separate for a year and do not communicate to see if they have real feelings for one another. But after six months in Paris, Claude is seduced by many lovers and sends a letter to Muriel calling off their commitment. When Claude meets Ann in Paris later, they have a love affair; but Claude still has feelings for Muriel.