On Blue Star in Parallel Universe 386, a sudden zombie outbreak plunges the world into chaos. Livestreamer Wang Youya fights for survival in her home and unexpectedly rescues her roommate, Li Junsheng. Together, they evade evolving zombies, fight against the apocalyptic organization Mutual Aid Society, and meet Sun Tianyang, a retired security guard, and Dr. Zhao, a researcher studying zombie evolution. The group forms a survival team. Along the way, they face betrayal, traps, and increasingly evolved zombies, while their companions fall one after another. Eventually, Dr. Zhao merges his consciousness with the zombie horde and becomes a high-level zombie leader determined to assimilate the human world. Wang Youya vows to defend humanity's independent souls to the death. Season One ends with their ultimate confrontation.