The never-ending bustle of life in Taipei has become meaningless to Kai since his girlfriend left for Paris. Brokenhearted, he spends his days working at his parents' restaurant and his nights trying to learn French at the local bookstore. It's there that he meets Susie, a sweet, lonely girl who takes an interest in him. Kai, however, can only think about getting to Paris and resorts to asking the neighborhood mob boss for help. But his help comes with strings attached, and soon the floodgates of catastrophe swing wide open for Kai. In the middle of all the chaos, Kai runs into Susie, and soon they are pulled together into the enchanting world of nighttime Taipei. Running, scooting, and even dancing through the city over the course of this one night, Kai and Susie gradually begin to fall in love. But by the early morning, Kai must make a final decision about whether he needs to say “Au revoir…”