Jeanne (Emilie Dequenne) lives in a house in the suburbs with her mother Louise (Catherine Deneuve). The two women get on well together. Louise earns her living by looking after children. Jeanne is half-heartedly looking for a job. Louise harbors the hope of getting her daughter a job with Samuel Bleistein (Michel Blanc), a famous lawyer whom she knew in her youth. Jeanne and Bleistein’s worlds are light years apart. However, they'll be set on a collision course because of an incredible lie that Jeanne invents, a lie that grows into the biggest news and political story of the day.