Tae Seok seems to be trying to hide his sorrow over Hae Jun's death, and his colleagues console him. In the meantime, another murder takes place, and it seems to be done by Jang Hyung Min who is known to have died from a car accident. Tae Seok's team starts to investigate the murder and looks into the killing method to find out if it's the same as Jang Hyung Min's.
불바다가 되어버린 터널에서 혼자만 살아남은 태석.
그러나, 자신이 장형민이라고 주장하는 가면 살인마가 나타나는데..!
