In 2999, the old world was destroyed, and zombies and mutated monsters filled the wasteland. The city, the last refuge of mankind, is divided into different classes. The high-tech area controls high-tech and people with special abilities, while the ordinary people in the slum area are struggling at the bottom. The young man Li Jie and the young girl Wang Xinyu depend on each other in a desperate situation. Faced with the threat of death outside the wall and the predators inside the wall, they embark on a thorny road with ordinary bodies in this huge apocalyptic cage in order to survive and protect each other.
