After a brutal breakup on the transatlantic flight to their dream European food and wine tour, Theo and Kit exited each other's lives once and for all. Theo has found confidence as a hustling bartender by night and aspiring sommelier by day, with a long roster of casual lovers. Kit, who never returned to America, graduated as the reigning sex god of his pastry school class and now bakes at one of the finest restaurants in Paris. All that remains is the unused voucher for the European tour that never happened, good for 48 months after its original date and about to expire. Four years later, it seems like a great idea to finally take the trip. Separately. It's not until they board the tour bus that they discover they've both accidentally had the exact same idea, and now they're trapped with each other for three weeks.

For cynical 23-year-old August, moving to New York City is supposed to prove her right: that things like magic and cinematic love stories don’t exist, and the only smart way to go through life is alone. There’s certainly no chance of her subway commute being anything more than a daily trudge through boredom and electrical failures. But then, there’s this gorgeous girl on the train. Jane. Her subway crush becomes the best part of her day, but pretty soon, she discovers there’s one big problem: Jane doesn’t just look like an old school punk rocker. She’s literally displaced in time from the 1970s, and August is going to have to use everything she tried to leave in her own past to help her.