The apocalypse has arrived, the planet has expanded, and countless craters of varying sizes have appeared across the world. Within these craters, mysterious black mist constantly emerges. Some creatures that come into contact with the mist mutate. Plants decay, zombies appear, supernatural abilities awaken… The sky is shrouded in black mist, the earth is overrun by bizarre creatures, and the survivors, in order to survive, head west, intending to gather the strength of all humanity to build the world's largest shelter. But Chen Yu has a different idea… Chen Yu awakens the [Intelligent Machine] ability, allowing him to bind to certain mechanical creations and continuously modify and upgrade them. Hiding in place and passively taking hits? A real man takes the initiative! A train, flashing with orange-red light, speeds through the thick black mist. The hundreds-of-tons-heavy locomotive roars, silencing anyone who dares to obstruct it…