Bad Guys - Season 1

When Nam Gun Wook has been stabbed to death, His father, Nam Goo Hyun reinstates Oh Goo Tak to fight crime with criminals. Yoo Mi Young is worried about the men selected for this job.

The team of mad dogs are tasked to find a blood obsessed serial killer before he manages to kill someone else.

After a failed attempt of the police to dismantle a black market of organs, the team of mad dogs is now tasked to continue and dismantle the organization before someone else is being killed.

The team of mad dogs are now hunting for the leader of the black market for organs. However by arresting her, it seems like an impossible task to get out alive.

Someone is killing six people randomly in several shootings, however something is odd about that latest shot. What's the motive behind it? Is the team able to identify the shooter in order to arrest him?

Doo Gwang orders his gang to bury Park Woong Chul alive as he declined several times to kill Lee Jung Moon. When his gang is busy burying him, Doo Gwang is betrayed and kidnapped by someone from his own gang.

When Hyun Woo and Im Jong Dae are killed, Jung Tae Soo promises Hyon Woo's fiance he would do everything to find his killer. His search however brings him some nasty encounters.

Lee Jung Moon is investigating his own past to know more about himself and those murders. Yoo Mi Young sides with prosecutor Oh Jae Won and discovers a disturbing factor in their team.

When Yoo Mi Young confronts Oh Goo Tak with the plot he planned, she asks for his reasons to do so and why them?

Prosecutor Oh Jae Won plan is now in motion as he angers Tae Soo & Woong Chul by revealing a story. Oh Goo Tak is hunting Lee Jung Moon.

When Nam Goo Hyun is killed, Mad dog team is framed for the murder. To prove their innocence, they come up with a plan to reveal the truth behind many murders.