A pioneer, Christelle Cuinet is fighting for the existence of the profession of end-of-life biographer: she records the words of people close to the end of their lives and turns them into a book to be offered to their loved ones. An eternal trace of these lives. She goes where no one goes. To that place where death is inevitable but where transmission is still possible. Between the palliative care services and the patients' homes, the film follows Christelle, raising the question of what we wish to pass on to those who remain. The time of the book and the particularly benevolent approach of the biographer allow these people to tell their stories. Between anecdotes, secrets and advice, like the mirrors of these so singular trajectories, they feel listened to at a time when the circumstances of their lives give rise to a strong need for transmission and assessment.