Mika, heiress to a Swiss chocolate company, is married to celebrated pianist André and stepmother to his son, Guillaume, whose mother died in a car wreck on his tenth birthday. Their lives are interrupted by the unexpected arrival of Jeanne, a young woman who has learned she was almost switched with Guillaume at birth.

Godard blends elements of literature, cinema and other artistic medias from different historical periods in order to make a stance on how words can be subverted and manipulated to many different contexts, sometimes bearing a similar significance to the original material or even creating an alternate context.