Overview: Killer Jung Ho-kyu (Bae Yoo-ram) plots his revenge against Jo Seok-tae (Lee Do-goon) for aiding Lt. Min So-hee. Investigator Cha Yeon-ho obtains damaging evidence against Ho-kyu. Yeon-ho gets labeled as a whistle blower and quits his job. Capt. Jeong Chae-man (Heo Sung-tae) of TCI hires him into the team as a Lieutenant due to his investigative expertise.