Chilsung School is for troubled kids. One day, a strange and bleak mood surrounds the school. The teachers turn into zombies. The kids must struggle to stay alive.
| Actor | Role |
|---|---|
 Baek Seo-binJeong Shik | Jeong Shik |
 Cha Min-jeeJung Ja | Jung Ja |
 Kim Gyeong-ryongPrincipal | Principal |
 Kim Seung-hwanVice principal | Vice principal |
 Park Jae-hoonGuidance teacher | Guidance teacher |
| LLee Sang-eunNot listed | Not listed |
 Ha Eun-seolHye Na | Hye Na |
 Seo JoonCheol Gi | Cheol Gi |
 Lee Seol-guTeacher Kim | Teacher Kim |
| SSon So-youngNot listed | Not listed |
 Lee Jae-sukStudent | Student |
| YYoo Seung-kwonSoldier | Soldier |
| LLee Seon-hoZombie | Zombie |