Gyeong Su is your boyfriend, you go to hyosan school while thinking that it while be a normal day but your wrong in the middle of the school an apocalypse started, in fact your science teacher create a virus that transform in zombie. You,Gyeong su and your others classmates are hidden in a classroom with the door locked, you sitting on the floor at a corner and do a panic attack… The others try to find a way to leave the school