Too old for her husband, too much in her job, Marie-Francine (Valérie Lemercier) has to go back to live with her parents...to 50 years! Infantilized by them, it is nevertheless in the small shop of electronic cigarettes that they will make him hold, that she will finally meet Miguel (Patrick Timsit). Miguel, without daring to confess it to him, is exactly in the same situation as her. How do these two to shelter their new love without home, there is the question...