It tells the story of an unknown virus that blocks the building, and the infected evolve into unpredictable forms that threaten human survival. The story takes place in a super high-rise building that was infected by an unknown virus and completely sealed off. Unlike the brainless infected people in traditional zombie movies, this virus will cause the infected people to continuously evolve. From the initial crawling beasts, they quickly evolved to be able to walk upright, recognize humans, and even possess group intelligence and tactical collaboration capabilities.
