The women of law investigate the death of Magali, a young women killed in her home. Mary Balaguère questions the victim's employers, one being a friend of prosecutor Elisabeth Brochène. On her side the prosecutor investigates the personal life of the victim and quickly discovers that the victim was lesbian. The victim's ex-girlfriend, Chloé, is suspected because she had trouble accepting the end of their romance. The investigation reveals that a third woman could be involved.
—Pascal Mercier