A determined homicide detective assigned to take down a ring of serial killers, has a personal motivation as one of the victims is his own brother-in-law.

A story about a prosecutor named Jin Jung who is armed with bad manners and delinquency. He breaks down the sanctuaries created by wealth and power, and he even takes down the greedy people living in those sanctuaries. He uses expedient methods over conventional ones, tricks over standard procedures, and delinquency over sincerity in order to stop the corrupt authorities from undermining society.

Ji-hyuk is an expert safe-cracker who lives the highlife stealing antiques and jewelry with his team. CHO, a powerful and cruel gang boss threatens them to steal $150 million with him. Ji-hyuk plans to get revenge on CHO, but ends up falling into his trap. However, CHO later realizes it was all part of Ji-hyuk’s scheme. When Ji-hyuk, who was thought dead, reappears, hidden secret relations between the technicians also surface.