Christelle is with her new-born baby one day when she is suddenly seized with panic. She disappears. Her husband, Laurent, starts looking for her everywhere, questioning her father, mother, sister and friends. What could have happened? Where did she go? In fact, she hasn't gone far: she's upstairs in the apartment of her neighbor, who has taken her in. She listens to Christelle, looks after her. It will upset her life. Christelle's disappearance will affect everyone, bringing them face to face with the truth of their love, even as it shows them the way to a new, stronger tenderness.