Emile is a 70-ish former horticulturalist who once raised bonsai trees "because they don't take up too much room." Indeed, his whole existence is safe and uneventful to a fault, somewhat juiced by friendship with raucous fishing companion Edmond. Still, they trade pleasantries rather than confidences -- so Emile is shocked when it turns out his elderly pal watches porn, paints nudes and shags women who are his contemporaries that he meets online.

C'est un week-end de printemps sur le littoral atlantique. Deux retraités se rendent dans leur résidence secondaire, une maisonnette aussi vaste qu’un timbre poste, et croisent un couple de punks ayant pour gîte une maison dessinée sur le sable...