After barely surviving a brutal attack by a sadistic serial killer, crime boss Jang Dong-su is left humiliated. Determined to catch the killer known as K, he forms an uneasy alliance with Jung Tae-seok, a relentless and incorruptible detective who often disrupts his illegal business. However, while Jang Dong-su wants K dead, Jung Tae-suk is determined to bring him to justice. With a deal in place—whoever finds K first will decide his fate—the hunt begins, blurring the lines between crime and law.
as Jang Dong-su
as Jung Tae-suk
as Kang Gyeong-ho
as Choi Moon-sik
as Heo Sang-do
as Choi Jeong-gyu
as Kim Dong-chul
as Cha Seo-jin
as Ahn Ho-bong
as Mr. Ahn
as Judge
as Chief of the Criminal Department
as Student
as Agent
as Mercedes-Benz Man's Son
as Gositel Owner
as Student
as Ha Moo-young
as Victim's Wife
as Bae Soon-ho
as Sale Company Employee
as Newbie agent
as Manager of Study Room
as Dog kennel
as Oh Dal Ho
