The older boys are graduating school and recount their memories together. The next day everyone defends the graduation ceremony against Zundar and Dadacha's Second-Button Monster, but Yumoto struggles using his love power.
Kazuomi Nara lost his job due to the bankruptcy of his company and Shiori, his fiancé, is pregnant. Running away from reality, he steals a car and ends up in a field with four strangers, Joe, Marco, Santa and Tokie. An old man who can't ride a bike, a con artist, a virgin and a shop keeper. As confused as he is, Kazuomi decides to stay with these four strangers.
정체를 알 수 없는 안개가 일본의 북쪽 반을 덮는데, 누구든 이 공기를 마시면 좀비로 변한다. 치명적인 안개가 닿지 않은 남부지역의 사람들은 성벽 뒤에 숨어 살고 있지만, 북부지역은 좀비가 된 사람이 득실거리는 황무지로 변한다. 그러나 ‘전기톱’ 칼을 들고 인공심장을 장착한 어여쁜 고등학생 키카의 등장에 희망이 다시 찾아오는데...
