Two brothers live in Montbard, Burgundy. For their summer vacation, they decide to visit their mother in Saint-Jean-de-Luz, because it’s been a long time, because it would make her happy… There’s no shortage of reasons. They buy a second-hand motor home and plan to stay open to whatever the road brings them, embarking on a brothers’ journey across France. Just the two of them. But an endearing young woman crosses their path. She has never seen the sea, so they decide to continue the journey together. Slowly, through subtle emotions and hidden desires, they learn that being a threesome need not exclude falling in love and enjoying shared pleasures, free of jealousy…