Catherine (Fanny Ardant) is an attractive woman with a great career and a seemingly solid marriage to Bernard (Gérard Depardieu), her husband of 25 years. Their lives seem to be going well until Catherine discovers that Bernard is having an affair. Realizing that she does not really know her husband or what he really wants, Catherine hires Marlene (Emmanuelle Béart), a beautiful prostitute, to act as “Nathalie,” a woman who will seduce Bernard and extract answers to the questions that are obsessing her. Instead of the traditional man/woman relationship, what begins is a mesmerizing relationship between two women. Expecting to be in control of the situation, Catherine meets with Marlene on a regular basis. However, what she learns soon takes her into a world that not only startles her but begins to change her. A woman’s take on the classic love triangle, Nathalie is written and directed by Anne Fontaine with her usual flair and intelligence.