Having been fired from her old job as a real estate agent, 40 years old Constance (Marina Foïs) faces severe pecuniary issues: she cannot rent a flat anymore and she doesn't find another job in Paris. With no other option left, she decides to call her former boss, from the small agency in La Rochelle where she started her career: to her surprise, he tells her that he is actually hiring, as the housing market appears to be growing in the area. He explains that he already found someone, but she is convinced she will get the job because of her experience and extensive qualifications. She does not: it is indeed Audrey (Joséphine Japy), a younger and prettier woman, which is hired instead. This is too much for Constance to take...