Derailed (2016)

Jin Il and Ga Yeong are teenage runaways who live like a family with other runaway children. Sometimes they do some delivery work, sometimes they steal things to make their living. When they run out of money, they make Ga Yeong lure a middle-aged man to a motel. She seduces him as if she were selling her body, but she fails to take any money from him, as he takes her hostage and demands Jin Il brings him money. It turns out that he is a crooked Karaoke bar owner who forces runaway girls like Ga Yeong to work for him. Can Jin Il rescue her?