Baptiste, a talented impressionist, can't manage to make a living. One day, a novelist, Pierre, asks him to imitate his voice over the telephone, so Pierre can write in peace and quiet. Gradually, Baptiste takes over Pierre's personality.
A stormy reunion between scriptwriter Lumir with her famous mother and actress, Fabienne, against the backdrop of Fabienne's autobiographic book and her latest role in a Sci-Fi picture as a daughter of a mother who never grows old.