A bullied teenager who is locked up at a juvenile detention center due to an unexpected accident, meets a mixed martial arts champion to break through his own limits.
| Directing | Johnny Chae | Director |
| Writing | Johnny Chae | Writer |
| Crew | Kim Jung-min | Martial Arts Choreographer |
| Editing | Steve M. Choe | Editor |
| Camera | Jin Hyun-woo | Director of Photography |
| Production | Jay J Yang | Executive Producer |
| Writing | Un | Comic Book |
| Writing | Kim Woo-sub | Comic Book |
| Sound | Lee Ki-jun | Sound Supervisor |
| Editing | Kim Hyung-seok | Digital Intermediate |
| Visual Effects | Kim Byeong-rae | VFX Supervisor |
| Sound | Jo Ran | Music |
| Costume & Make-Up | Choi Min-seon | Makeup & Hair |
| Costume & Make-Up | Ham Hyun-joo | Costume Design |
| Art | Lee Min-a | Production Design |
| Sound | Kim Sin-yong | Production Sound Mixer |
| Lighting | Lee Chul-oh | Lighting Director |
| Production | Lee Jae-ha | Executive Producer |
| Production | Kim Kwan-hun | Producer |
| Crew | Lim Hyo-woo | Stunts |
| Art | Choi Byung-wook | Props |
