Honed from childhood into a merciless killing machine by a criminal organization, assassin Sook-hee is recruited with the promise of freedom after ten years of service. However, secrets from her past destroy everything she’s worked for and now she embarks on a roaring rampage of revenge.
| Actor | Role |
|---|---|
 Kim Ok-vinSook-hee | Sook-hee |
 Shin Ha-kyunJoong-sang | Joong-sang |
 Sung JoonHyun-soo | Hyun-soo |
 Kim Seo-hyungKwon-sook | Kwon-sook |
 Cho Eun-jiKim Sun | Kim Sun |
 Lee Seung-jooChoon-mo | Choon-mo |
 Jung Hae-kyunJang Chun | Jang Chun |
 Park Cheol-minSook-hee's Father | Sook-hee's Father |
 Son Min-jiMin-joo | Min-joo |
 Min Ye-jiYoung Sook-hee | Young Sook-hee |
 Ji Dae-hanShadow 1 | Shadow 1 |
 Seo Beom-sikShadow 2 | Shadow 2 |
 Kim Jae-hyun-IShadow 3 | Shadow 3 |
 Park Joo-haPrayer House Trainees | Prayer House Trainees |
 Geum HannahPrayer House Trainees | Prayer House Trainees |
 Jung Sung-yoonBriefing Man | Briefing Man |
 Yoon Jin-youngHyun-soo's Friend | Hyun-soo's Friend |
 Kwon Hyeok-beomJoong-sang's Henchman | Joong-sang's Henchman |
 Yeo Dae-hyunHyun-soo's Colleague | Hyun-soo's Colleague |
| SSung Been-wooPoliceman | Policeman |
 Kim In-chulPoliceman | Policeman |
 Kim Dae-jinTheater Actor | Theater Actor |
 Hwang Seong-hoJoong-sang's Henchman | Joong-sang's Henchman |
 Lee Chae-YunJapanese Man's Daughter | Japanese Man's Daughter |
| SShin Jung-hyeokFormer Yanbian Trainee | Former Yanbian Trainee |