Paris, 10th arrondissement. Ismaël and Julie have been a couple for years, but their relationship is in crisis. In order to gain new momentum, they bring in Alice - but the ménage-à-trois model doesn't really work out either. When Julie dies unexpectedly of heart failure, Ismaël does not know what to do with his grief. Even Julie's sister Jeanne cannot comfort him. It is only when he meets the young, handsome Breton Erwann that he starts to think differently.