Aymeric (Karim Leklou) runs into Florence (Laetitia Dosch), a former coworker, one evening in Saint-Claude in the Haut-Jura. She is six months pregnant and single. When she gives birth to Jim, Aymeric is there. They spend happy years together until Christophe, Jim's biological father, shows up... It could be the start of a melodrama, it's also the start of an odyssey into fatherhood in a film that gently explores alternative forms of masculinity.