When Hubert Larnaudie invites the fellow residents of his Parisian apartment building to drink a bottle of 1954 Beaujolais, he has no idea of its special properties. The next morning, Hubert finds himself waking up in 1950s Paris, as do antique restorer Magalie, mixologist Julien, and Bob, an American 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 all four. But ultimately, they need to get back to the present. And time is of the essence...