Walking into the wrong room, Anna (Sandrine Bonnaire) ends up confessing her marriage problems to a financial adviser named William Faber (Fabrice Luchini). Touched by her distress and somewhat excited by her presence, Faber does not have the courage to reveal to her that he is not actually a psychiatrist. As time progresses, a strange relationship ensues. William is moved by the young woman, and fascinated to hear her confess her deepest secrets. But who is Anna and is she really fooled by this little game?