The drama tells the story of a Metropolitan Investigation Team Unit tracking an organization called Vigilante, which judges the wicked people who escaped the law which has become a social phenomenon.
Genre: Action, Crime, Thriller
Cast:Nam Joo-hyuk , Yoo Ji-tae , Lee Jun-hyuk , Lee Hae-young , Yoon Kyung-ho , Kim So-jin , Ahn Seong-bong , Lee Do-Goon , Tom Choi , Gi So-yoo , Lee Dong-kyu , Eom Ji-man , Jung Yeon , Seo Rin Song
Kim Ji Yong loses his mother to a gangster and begins punishing criminals who evade the law.
Choi Mi Ryeo baits the Vigilante with more information on criminals on REPO25h.
Copycat crimes emerge nationwide, and Jo Heon and Choi Mi Ryeo chase after the Vigilante.
The fake Vigilante suggests joining forces, and Jo Heon closes in on the Vigilante's identity.
Mi Ryeo reports on Se Wool's alleged crimes, and Kim Ji Yong and Jo Heon come into conflict.
Ji Yong and Gang Ok help Mi Ryeo continue digging into Kim Sam Doo and the Vole.
The Vole tries to bury the case by sacrificing Kim Sam Doo, but Sam Doo retaliates with all he has.
Kim Ji Yong gathers everyone involved in one location, and the final battle begins.