a serial killer and a new victim. wooyoung works for the investigative committee, with hatred and grief in half, to be honest. life is definitely not on his side. "you will be choi san's partner in this murder case." the words of the chairman of the investigative committee hit wooyoung with an electric shock. wooyoung looked at the man sitting on the couch in a black coat and elegant suit, shivering. choi san is a famous investigator, and the look he gives wooyoung is heartbreaking.