To catch dangerous criminals, an undercover detective division is formed. Their methods include wiretapping telephone conversations, monitoring networks, and deep infiltration into criminal groups. Cha Gon-u – former member of SEAL and SWAT. His main goal is revenge for the death of his girlfriend. He pursues her covertly and relentlessly. Chan Mu-won – principled and perceptive team leader. Chan Min-ju – specialist in disguise, psychoanalysis, and martial arts. Chwe Tae-pyeon – chief information gatherer. His communication channels are dubious, but the information he obtains is the most valuable. Dear users! To keep us handy, bookmark this page: CTRL+D