On a Christmas Eve, a lifeless body of teenage boy is found. The victim's revenge-driven twin brother checks himself into a juvie to hunt down the suspects.
| Directing | Kim Sung-soo | Director |
| Writing | Kim Sung-soo | Screenplay |
| Production | Lim Min-sub | Producer |
| Writing | Ju Won-kyu | Novel |
| Art | Ryu Seon-gwang | Production Design |
| Production | Choi Ho-tae | Producer |
| Visual Effects | Song Seung-whan | VFX Supervisor |
| Production | Choi Jin | Producer |
| Camera | Lee Seok-jun | Director of Photography |
| Lighting | Kang Ji-hyeon | Lighting Director |
| Sound | Park In-young | Original Music Composer |
| Costume & Make-Up | Hong Su-hee | Costume Design |
| Costume & Make-Up | Choi Na-young | Makeup & Hair |
| Sound | Kim Bong-soo | Sound Supervisor |
| Crew | Yoo Sang-seob | Martial Arts Choreographer |
| Production | Nam Gi-ho | Executive Producer |
| Editing | Kim Ra-mi | Editor |
| Sound | Ha Nam-gyu | Production Sound Mixer |
| Editing | Lee Hye-min | Colorist |
