Anne-Marie has been dreading this day for months: her youngest son is leaving the family nest. She will have to face facts: nothing will ever be as it was before. Throughout this particular day, she revisits the decisive moments in her life, a large part of which has been devoted to motherhood. How can she learn to live alongside her husband of few words, and find new meaning for her life to come? Besson scrutinizes the contradictory emotions, psychological flaws, and secret thoughts of a fragile woman.