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.
Still reeling from the events of a zombie apocalypse, a young woman, along with a group of allies, makes her way across a dystopian Japan in search of her mother, the Zombie Queen.