Catherine Breillat's adaptation of An Old Mistress stars Fu'ad Ait Aatou as Ryno de Marigny, and Asia Argento as Vellini, two lovers in 19th century Paris. The two have been passionately involved for nearly a decade, but de Marigny attempts to end their relationship now that he is engaged to Hermangarde (Roxane Mesquida), a respectable young woman. As the bride-to-be's grandmother forces de Marigny to confront his past as a notorious womanizer, the film flashes back to reveal the intense decade the lovers shared. Although de Marigny appears to want to shut Vellini out forever, her passions may be far too much for him to deny.
by Perry Seibert synopsis