Switzerland. Bundesamt für Kultur.

Huppert plays Mika, wife of celebrated pianist André Polonski (Jacques Dutronc) and stepmother to his son, Guillaume, whose mother died in a car wreck on his sixth birthday. Their lives are interrupted by the unexpected arrival of Jeanne (Anna Mouglalis), a young woman who has learned that she was almost switched at birth with Guillaume. Also a pianist, she harbours a suspicion that she may be André's daughter.