Meet the two fearless men willing to go to extreme lengths in their pursuit of a serial killer that has shaken up their quiet city: Lee Dong Sik, a once capable detective, is now demoted to performing menial tasks at the Manyang Police Substation. He was just beginning to settle into a peaceful life when his new superior, Detective Han Joo Won, is transferred in. Joo Won is an elite detective whose father is the star candidate for the National Police Agency’s next chief. Despite his admirable qualities and high social standing, Joo Won harbours a long-held secret.
