Inspector Ryoo (played by Lee Dong-wook) is a reasonably competent and ambitious cop working for internal affairs. Detective Ryoo seems to take his job seriously, brutally questioning fellow Officer Kim (played by Lee Hwa-ryong) who claims to have murdered the man who murdered his partner, Officer Tak (played by Lee Joo-hyun). Conveniently, there are now no other witnesses to the alleged first murder, Bad and Crazy, Public Enemy, Cha Hak-yeon, Han Ji-eun, Kang Ae-shim, Kim Dae-gon, Kim Sae-bom, Lee Dong-wook, Lee Hwa-ryong, Lee Joo-hyun, Lee Sang-hong, Lee Seo-an, Wi Ha-joon, Yoo Seon-dong