A butterfly flies from the mountain to the city. Sang-Kyu, who works in a company, buys a house in the suburbs and lives with his wife and daughter, Yun-Jeong. But Yun-Jeong becomes a somnambulist because of the illusion of a butterfly flying to the house. Sang-Kyu happens to know Mi-Wu, a singer, who loves Song Cheol-Ho but wanders in her life after his death. On the other hand, Yun-Jeong regains... see more