With only a little farther to go until they reach Akira's hometown in Gunma, the gang runs into a German college student named Beatrix. Despite the zombie pandemic, she says that she is determined to make her dream come true while she's in Japan.

With the only tunnel to the village sealed off, Akira and the others decide to cut through the forest and cross the mountain; along the way, they run into a man named Kumano, who is constructing a treehouse in the forest.

Together with the villagers and the people who escaped from Tokyo, Akira and his friends help each other out while enjoying a brief moment of happiness; Meanwhile, Higurashi has been preparing to take his revenge on society.