When Hubert Larnaudie invites some fellow residents of his Parisian apartment building to drink an exceptional bottle of 1954 Bordeaux, he has no idea of its special properties. The following morning, Hubert finds himself waking up in 1950s Paris, as do antique restorer Magalie, mixologist Julien, and Airbnb tenant Bob from Milwaukee, who's on his first trip to Europe. After their initial shock, the city of Edith Piaf and An American in Paris begins to work its charm on them. The four delight in getting to know the French capital during this iconic period, whilst also playing with the possibilities that time travel allows. But, 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 St Antoine...