After graduating from the Korean National Police University and becoming a detective, Jiyong is assigned to investigate a suspicious report and comes face-to-face with a nationwide jeonse scam. As he confronts criminals who slip through the cracks of the legal system without proper punishment, Jiyong begins to question the rules of vigilante justice he once set for himself. While pursuing the scam’s ringleaders, the four vigilantes receive a threat from someone who knows their true identities and begin to sense the looming presence of a far greater evil. This series contains depictions of mature content that may not be suitable for some readers. Viewer discretion is advised.