Mengcheng is a small border town hidden in the north of the desert, where few outsiders set foot. A journey and an accident caused three outsiders to break into this desert and lose their way. Just when they were helpless, the local man who was supposed to be dead suddenly walked towards them...
Strange companions, a vigilant army, a research institute that suddenly emerged from the sky, unheard of rare elements... These all made them unconsciously involved in another world, and they had no choice. But what they didn't expect was that this was just the beginning of things. What happened afterwards was enough to make them completely lose all their confidence as human beings...