After Y/N L/N joins Hyosan High school, Han Gyeong-su, a junior and bestfriends with Lee Cheong-san, takes a quick liking to the new student. However, a student is bit by an infectious lab hamster in Lee Byeong-chan's science lab. The next day, a virus sets loose in the school. Will Y/N and Han-Gyeong-su stay safe? Or will they be a zombie's lunch?