A human melodrama in which a woman who is terminally ill and a man whose life is in the gutters are entangled in a murder case and become someone precious in each other's life.

Chief of the ‘Special Crime Unit’, OH Gu-tak, looks for the former gangster, PARK Woong-chul, whom he had worked with before, and recruits a con artist, KWAK No-soon, and a convicted cop, KO Yoo-sung in the new team. With new blood, the ‘Bad Guys’ have become stronger and tougher. As they dig deeper into the case, they sense that a much bigger crime organization is behind it all and they begin the hunt for bad guys…

A desperate 35 year-old Young-sil is more than ready for full time job. And finally she gets a call from National security department as an intern. But her joy lasts no long, soon asked to leave. Accidently she discovers a secret about her boss and she suggest a deal of full time job to help him; secret spy.

To combat rising violent crimes, the Police Chief asks Detective Oh Goo Tak to form a team consisting of criminals. He is currently suspended from the police force for using excessive force. He then gathers team members: Park Woong Chul who is a gangster, Lee Jung Moon who is the youngest serial killer with extraordinary intelligence and Jung Tae Soo who is a contract killer. Police Inspector Yoo Mi Young also joins the team and she tries to have these guys work as a team by dealing with them rationally and sometimes emotionally.

Authorities ignore a scientist's warning of an impending tsunami -- but when his prediction comes true, the locals must scramble to survive.