An arsonist is terrorizing Seoul and the fire investigators are hot on his trail.
| Actor | Role |
|---|---|
 Choi Min-sooJo Sang-woo | Jo Sang-woo |
 Cha Seung-wonHui-soo | Hui-soo |
 Yoo Ji-taeHyun-tae | Hyun-tae |
 Park Sang-myeonHan-moo | Han-moo |
 Jung JunJoon-sung | Joon-sung |
 Kim Gyu-riHyun Min-seong | Hyun Min-seong |
 Kim Soo-roAxe Man | Axe Man |
 Lee Ho-jaeIn-ho | In-ho |
 Park Jae-hoonJong-gu | Jong-gu |
 Jung Ae-riMyung-jin | Myung-jin |
 Huh Joon-hoIn-soo | In-soo |
 Jung Won-joongIn-jae | In-jae |
 Cho Seon-mookTae-sung | Tae-sung |
 Cho Hyoung-kiGibbs Man | Gibbs Man |
| CChoi Min-juSung-eun | Sung-eun |
| 진진남수Cheol-han | Cheol-han |
| HHwang Ui-dooUi-doo | Ui-doo |
 Jeon Hun-taeWon-man | Won-man |