Marquise is a drama about the rise and fall of a beauteous actress. As cheerfully portrayed by Sophie Marceau, the eponymous heroine is an engagingly ribald, but perhaps rather too modern, character. She rises from an impoverished background to become a favourite of the Sun King, Louis XIV, and the mistress of the celebrated Racine, who wrote roles especially for her; but her fate, in the end, is a tragic one.

Twenty-year old misfit François earns his living by gathering boxes and bottles to resell to local shopkeepers. He lives with his grossly insensitive mother and stepfather. Mado is a gawky 11-year old, who is neglected by her family because of the oddness of the way she expresses her affection. For reasons which never become clear, François kidnaps Mado, and takes her to live with him in the attic of his parents' home. Instead of feeling fear, Mado enters into the spirit of the abduction, and they joust with one another, increasingly finding love and comfort in their relationship. When the police come upon them, however, they put an entirely different interpretation on their behavior.