Mad Dog
Choi Kang-Woo is a former detective, but he now works as a veteran insurance investigator. He leads a team that attempts to reveal insurance fraud cases.


Mad Dog members find out Noo Ri is Chief On's son. Chief On tells Noo Ri to lay low and hide somewhere. The prosecutors from Seoul Prosecutors' Office seize and search Mad Dog's office and confiscate everything, including the video of Kim Bum Joon's original insurance policy.