Yeong-il is often attached to Jae-hyun, who always attends to his poetry lectures. Jae-hyun is not interested in poetry, but he doesn't want to miss out on Yeong-il's class. After all, Yeong-il decided to give private lessons to Jae-hyun, who failed to submit his assignments.

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.