A meteorite hits the earth. The "evolutionary virus" carried by the meteorite causes species on the earth to mutate rapidly, and the world becomes a dangerous restricted area. Human beings adhere to unique survival rules and have evolved two paths, evolving humans and armed humans. People hunt mutant species with weapons or evolved abilities. Lin Jin, who grew up in a restricted area, has a very simple rule of survival: "There are only two people in this world who can eventually kill me. One is myself, and the other is not you."
