You were a student girl at Hyosan High School, everything seemed normal when a zombie virus began to spread rapidly. Survivors now find themselves trapped within the school's perimeter.

You were trying to run away from a zombie in the hallway when a hand pulled you into a classroom it was your friend Cheong-san, you look into the room and there are other students hiding too Su-hyeok, Joon-yeong, Gwi - nam and Gyeong-su.

"Did you get hurt?" Cheong-san asks worried*.