Aymeric meets up with Florence, a former work colleague, at a chance meeting in Saint-Claude in the Haut-Jura region. She is six months pregnant and single. When Jim was born, Aymeric was there. They spend many happy years together, until the day when Christophe, Jim's natural father, turns up... It could be the beginning of a melodrama, but it's also the beginning of a fatherhood odyssey.