Jang-soo is a judo instructor who is indifferent to everyone but his daughter. One day he realizes he can see Tae-jin, a ghost who used to be a devoted police officer. Tae-jin asks Jang-soo to help solve the case that took his life away from him.
The lives of Misong, an indebted prostitute living in a red-light district, and Geunhee, her parasitic pimp, may be the most vile and futile on earth. The harder they try to escape, the deeper they fall into the pit. Every day, survival becomes a war. Every day, Misong grows more and more...