Seonhwa is an illegal Korean-Chinese immigrant working in a guesthouse in Paris. Back in China, she has a twin sister Yeonhwa and a son named Myeong-cheol, who is in need of a surgery. They share the same passport given that they have the same appearance. She needs to get the passport from Yeonhwa and go to China to see her son. But things go wrong on the departure day. The police chase after Seonhwa. Shown in 30 film festivals, Belle Ville conveys the desperate situation of Seonhwa, an unstable stranger in Paris. Filming and directing that vividly reflect the narrative are the greatest virtues of this film. Lee Sanghee offers the finishing stroke to the film.