Nine years ago, Jesse (Ethan Hawke) and Celine (Julie Delpy) met unexpectedly on a train and were moved. After a crazy and romantic night in Vienna, they broke up before sunrise and met again in Vienna. Nine years later, Jesse has become a best-selling author, and Celine is a member of the French environmental organization. What Jesse tells in his new book is the romantic night nine years ago. When promoting his new book in Paris, Jesse and Celine met in a bookstore, but they only had one afternoon to spend together. Before sunset, Jesse had to fly back to the United States. The two walked on the streets of Paris in the afternoon, rafting on the beautiful moat, talking about everything and being excited. But just like a trick of fate, happy times are as intoxicating as fireworks but short-lived. Jesse sent Celine again and again, and it was hard to forget; Celine used guitar and singing to miss the love deep in her heart. The sun was about to set and Jesse was about to miss his plane, or perhaps what he didn't want to miss even more was his destined fate.