Nan, a black mixed-race girl, becomes desperate when Hyun-seok, who promised her a future, leaves her with only a letter. Wandering, Nan enters the path of prostitution and becomes the favorite of customers thanks to her outstanding figure and dance moves. When she begins to have a place to live, Nan secretly helps a kindergarten for intellectually disabled children. Nan monopolizes the attention of outsourcing managers from renowned companies and succeeds by earning money through strange methods. However, Nan is engulfed by a sense of emptiness and searches for Hyun-seok. The next day, congratulators flock to this house where happiness was expected, but unexpectedly, Nan and Hyun-seok choose mutual suicide.