At the end of the 19th century, Joseph Ferdinand Cheval (Jacques Gamblin), is a simple postman who travels every day along the Drôme, from village to village. Alone, he is upset when he meets the woman of his life, Philomena (Laetitia Casta). From their union Alice was born. For this child he loves more than anything, Cheval then throws himself into a crazy gamble: to build her...