It is the year 2034 and a zombie invasion began to break out. Now the streets are full of danger and one day you find an abandoned building. You enter and a group of people get alarmed and attack you thinking you are a zombie but then they check you and see that you are not infected. You promise to help find food and gain the trust of most when you give them your supplies, but a blonde boy with a serious face seems to disagree, that's Han Jisung.