The second season of CITY POLICE follows four actors experiencing the forensic investigation, in which S. Korean Police is considered as one of the best in the world. It is a rare opportunity for them to witness the real activity of the forensic team that we've only known through movies or TV series. All 4 actors, including the newcomer Chun Jung-myung, have been playing a police officer or detective in their works. But the crime scene investigation is different from anything they've ever done. In a whole new environment, 4 actors do their best to fulfill their duties as CSIs with professionalism and seriousness.