Choi Ki-dong, who becomes a teacher, and Park Young-jun, who becomes a gang member, meet again after 10 years. To compete for Min Ju-ran, they start a fierce battle remembering their high school days, when the situation was completely different.
| Production | Kim Mi-hee | Producer |
| Directing | Kim Sang-jin | Director |
| Production | Kim Sang-jin | Executive Producer |
| Writing | Kang Woo-suk | Writer |
| Editing | Ko Im-pyo | Editor |
| Sound | Mu-hyeon Son | Original Music Composer |
| Writing | Lee Hae-young | Original Story |
| Writing | Park Jung-woo | Writer |
| Directing | Kim Dong-uk | Assistant Director |
| Camera | Chung Kwang-suk | Director of Photography |
| Visual Effects | Cho E-suck | VFX Supervisor |