Forty-something, a surgeon’s wife, Mrs. Sheila Redden of Ireland arrives in Paris en route to the south of France for a second honeymoon. She has booked the same hotel room as the first honeymoon. Her husband, Kevin, is delayed by his surgical obligations, and promises to join her, but she knows that he is not keen on the trip.

While in Paris she meets Tom, an American at least ten years younger who follows her to the south. They begin a love affair that overwhelms her with its emotional and sexual power. Kevin stays home, at her urging, but he becomes suspicious and uses a fake illness in their teenage son in an attempt to lure her back. Then he flies to the resort to confront her. His brutal manner convinces Sheila to leave him.

Tom wants her to return with him to Vermont. She consults a priest for advice. In desperation Kevin appeals to Sheila’s brother, also a physician. They medicalize her love for Tom as a symptom of early menopause and try to bring her home. Allowing Tom (and the reader) to believe she will go with him, she finally decides for a job in London and solitude in modest rented rooms.