Vienna, its imperial palaces, its blue Danube and… its microscopic French community. Young couple in sight, Ève and Henri, parents of a little Malo, have everything to be happy. He is the conductor of the Opera, she works at the Institut français. A life apparently flawless, until the day Henri succumbs to the charms of their son's teacher. When she finds out about it, Eve sees her protected universe crack and her certainties crumble. Mad with jealousy, she offers herself out of spite one night to Jonas, a young Austrian met in a bar. For the young woman, determined to win back her husband no matter what the price, it is only a brief parenthesis with no tomorrow. But the mysterious Jonas does not intend to close it so quickly ...