If you beat up a good guy, it's violence. But if you beat up a bad guy, that is justice.
EPISODE 1
Episode 1
An undercover detective is murdered, and the chief of police summons Oh Gu-tak to investigate.
EPISODE 2
Episode 2
Tasked with catching the Northeast Serial Killer, the Bad Guys each begin their own investigations.
EPISODE 3
Episode 3
The Bad Guys launch a full-scale investigation to find a victim of organ trafficking.
EPISODE 4
Episode 4
The Bad Guys uncover the shocking truth behind an underground human trafficking organization.
EPISODE 5
Episode 5
The Bad Guys are tasked with catching a serial shooter who has killed 12 people.
EPISODE 6
Episode 6
Woong-chul is kidnapped and almost buried alive by Doo-gwang. The Bad Guys go to investigate.
Kim Sang-joong
Park Hae-jin
Ma Dong-seok
Jo Dong-hyuk
Ye-won Gang
Hwang Seung-eon
Kim Jeong-min
Han Jung-hoon