Natalie and Olivier have everything you could want for family happiness: two grown-up daughters, a house on the banks of the Seine, a favorite job. Suddenly, a series of strange coincidences make a woman remember an episode from her youth, which concerns her ancient secret. Events unfold in the same sequence as twenty years ago. It could be someone\'s bad joke, petty revenge or just her own imagination, stirred by memories... When there are too many coincidences between the past and the present, Natalie becomes frightened. Someone is trying to make her go through it again. And when the past and the present become so similar that it cannot be explained rationally, does Natalie have to believe that time can be turned back?