Lila, a 20-year-old student, suddenly disappears. A few weeks before her disappearance, Lila had created an Instagram account called @lessiffleurs with her friends Soso and Rebecca, where she posted selfies of herself with each of the men who harassed her daily in the street. Marianne Kacem, captain of the search and intervention brigade (BRI), is in charge of the investigation. She can't help thinking that Lila had it coming for walking around in a miniskirt and taking photos with her harassers. The young lieutenant Laurent Tardi, full of good intentions but inexperienced, is assigned to assist her. He is a feminist and believes that all harassers are potential rapists. Together, they will conduct the investigation to find young Lila and her kidnapper.