For many years, Marie (Rampling) and Jean (Bruno Cremer) have happily spent their vacations together at their country house. One day at the beach, Marie naps in the sand while Jean goes for a swim.
When she awakens, he is gone. Did he drown? Did he run off?
Distraught, Marie notifies the authorities but after an extensive search, no body is found.
Tenaciously and disquieteningly, Marie keeps the memory of her husband alive, often speaking of him as if he never disappeared. She strikes up a tentative relationship with Vincent (Jacques Nolot), but is unable to make any real commitment. Ultimately, she must grapple with her life alone while coping with her erotic stirrings and fantasy life.