天道輝是個心灰意冷的過勞社畜，某天早上，突然爆發的喪屍疫情搞得全世界天翻地覆，他卻大徹大悟，人生從此幡然改途。

輝為了彌補錯過的所有假期，決定進入超懶模式，沒想到卻得為了買更多啤酒，勇闖喪屍遍布的街道。

輝發現大學時一起打橄欖球的隊友遇險，迅速趕到新宿，試圖拯救他。

輝和阿憲逃到一間百貨公司地下室，遇見三位空服員，又完成清單上的一個項目。

輝想起兒時夢想，前往水族館尋找某個物品，結果遇到一群正在倉皇逃命的倖存者。

Akira leaves Tokyo behind and heads back to his hometown, Gunma. When he makes a pit stop to get an RV, he reunites with Shizuka.

Akira finds himself sucked right back into his old, corporate drone mindset. Seeing him in that state triggers bad memories for Shizuka.

Akira and his friends meet a German college student who isn't going to let a zombie outbreak stop her from chasing her dreams.

Forced to take a detour through the forest, Akira gets very excited when he comes across a man building himself a treehouse.

Akira and the others settle in, helping out the villagers and their fellow refugees from Tokyo. But an old friend becomes consumed with revenge.

With a massive zombie horde coming their way, Akira and the others split up to try and save the villagers, only to find themselves facing another threat.