Derailed

Jin-il, Ga-young, Bong-gil, and Min-kyung are teenagers who have run away from home and formed a makeshift family. Jin-il leads the group, supporting them by selling stolen items. As their financial situation becomes increasingly dire, they resort to planning riskier crimes to survive in a harsh world where adults offer them no protection. In a desperate move, they steal a car belonging to Hyung-Seok, a karaoke bar owner who exploits underage girls for prostitution. Furious, Hyung-Seok tracks them down with his associates and coerces Ga-young into working at his bar until they can repay him for the car. The situation worsens when two of the friends abandon their efforts to earn money, leaving Jin-il to face the challenge of rescuing Ga-young on his own.