When Hubert Larnaudie invites some residents of his Parisian apartment building to drink a bottle of 1954 Beaujolais, he has no idea of its special properties. The following morning, Hubert finds himself waking up in 1950s Paris, with his guests. Ultimately, they need to work out how to get back to 2017. And the key lies in a legendary story and the vineyards of the Chateau Saint-Antoine...