Jisoo is a zombie, moving over a ruined city, full of ruined buildings, rusted cars, broken windows and abandoned skyscrapers, after a zombie apocalypse. Jisoo can only grunt and say a few words and with his friend Mina and a group of zombies, they go out to look for food, eager to have brains, because when they eat them, the memories of these are reflected in the minds of the living dead and so on. They have a few minutes of lucidity. After assaulting a building with some dead teenagers and consuming the brain of one of them (Lee Taeyong), Jisoo begins to be attracted to her partner, Jennie Kim, and since then feels the need to protect her, taking her with her to the zombie shelter, where the relationship between them sets in motion a sequence of events that begin to change the behavior of the inhabitants of the place. Seen as a danger by the elderly, Jennie decides to return to her father and Jisoo decides to follow her, endangering her own existence by following her to BPYG City, the largest shelter of the remaining humans.