A specialist in the field of memory, Dr. Delouvrier has written several best-sellers on the topic. A lonely man who recently split up with his girlfriend, he devotes all his time to his work and searching for his own lost memories. His only close relationships are with Vigo, a friend who has moved out to the country to work with his hands, and Madame Viviane, a retired medium who helps him recover memories from his childhood. Until the day that a woman named Lena, who has been suffering from amnesia since a car accident comes for a consultation. She has entirely forgotten her past, and no longer recognizes either her husband or the sad woman she seems to have been before the shock. But Delouvrier remembers having run into her twenty years ago, when he was still a student. Although he hadn’t had the nerve to speak to her back then, now he is ready to try anything to help her. As he experiments with various methods – which are also opportunities for the author to explain how our memories work – he falls ever more deeply in love.

A lonely memory specialist, Dr. Delouvrier devotes all his time to his work. One day, a woman named Lean comes to his office. Although she has total amnesia, he recognizes her: he ran into her twenty years ago. As he helps her search for her past, the inevitable occurs.