Lin Xi, an ordinary overworked office worker, repeatedly dies and comes back to life during a zombie outbreak, with each resurrection allowing her to rewind time a little further. From desperately trying different ways to survive in an office tower to stockpiling supplies across the city and converting a building into a safe house, she suffers repeated failures. Three years before the outbreak, she finally sells her property and returns to her hometown to build the ultimate self-sufficient survival fortress. Just when she believes every detail is covered, she encounters bizarre shifts in the timeline, a virus that spreads through water and continues to evolve, and violent raids by armed civilian groups. Caught between the zombie apocalypse and the darkness of human nature, she relies solely on her memories of previous lives and her survival skills, vowing to break the endless cycle of death.