An expelled boxing champion, who now is a high-school teacher, witnesses intolerable violence and throws her first punch to build justice against it, while putting on a mask.
| Directing | Park Jin-pyo | Director |
| Writing | Hyeon Choong-yeol | Writer |
| Writing | Yeoh Gee-na | Writer |
| Sound | Dalpalan | Original Music Composer |
| Editing | Kim Woo-hyun | Editor |
| Writing | Park Jin-pyo | Adaptation |
| Production | Kwon Mi-kyung | Executive Producer |
| Production | Jenna Ku | Co-Executive Producer |
| Production | Lee Jun-sang | Producer |
| Camera | Kim Yong-seong | Director of Photography |
| Lighting | Bae Il-hyuck | Lighting Director |
| Editing | Kim Hyeon-seo | Editor |
| Art | Lee Mi-kyoung | Production Design |
| Art | Im Ho-sang | Props |
| Costume & Make-Up | Ko Hee-jung | Costume Design |
| Costume & Make-Up | Park Hui-jeong | Makeup & Hair |
| Sound | Cho Woo-jin | Production Sound Mixer |
| Sound | Kim Chang-seop | Sound Supervisor |
| Visual Effects | Jeon Gun-ik | Special Effects Supervisor |
| Crew | Heo Myeong-haeng | Martial Arts Choreographer |
| Crew | Yoon Seong-min | Martial Arts Choreographer |
| Visual Effects | Kim Hyeok | VFX Supervisor |
| Art | Shin Soon-ok | Production Design |
