Jeanne (Sophie Marceau), exemplary wife, mother of two children, is absorbed in her latest novel. Surprisingly, the reality begins to change around here ... First, the little details, then her body, are almost unnoticed. Concerned, seeking support from loved ones. However, none of her surroundings confirm these changes. The family is convinced that her obsession comes from stress, overwork and writing fantasies. Jeanne almost believes they are right. Until the day when a mother discovers a picture among her mother's spies. It leads her to a certain Italian. From now on, nothing is clear. Renamed Jeanne discovers the mysterious past and secrets of her identity.