Kim Ji-yong leads a double life as a Korean National Police University student by day and the Vigilante by night, personally punishing criminals who evade the law. He is surrounded by people who all possess different ulterior motives.
Nam Joo-hyuk
Kim Ji-yong
Yoo Ji-tae
Jo Heon
Kim So-jin
Choi Mi-ryeo
Lee Jun-hyuk
Jo Gang-ok
Kwon Hae-hyo
Lee Joon-yeop
Lee Seung-ryong
Min Seon-wook
