One night, a burglar in a Santa Claus costume is surprised by Antoine, a young boy who believes he is the real Santa Claus. Antoine then follows him, and they embark on an unexpected adventure that will change their lives.
Rémy is a young Parisian with an unskilled job. Mélanie is a young Parisienne who works in scientific research. Two depressive moods living in close proximity, but being unaware of each other. Will they ever meet?