It's been almost a decade since "Jesse" (Ethan Hawke) met "Celine" (Julie Delpy) on that Austrian train and now he is a successful author on a book tour and visiting Paris. Guess who walks into the store seeking a signed copy? Did he turn up in Vienna six months after their last meeting like they agreed? Did she? That's the basis for their rekindling of the rapport that started back then, but after their initially enthusiastic welcoming of the other is that spark still going to be there? Like last time, he has a plane to catch so they only have a little time and decide to explore this city…