The survivors are divided into two completely different worlds, "above the dome" and "under the dome": in the fortress on the top of the mountain, the "heavenly people" control resources with privileges and high technology and maintain a high-pressure rule; in the underground settlements, the "dust people" struggle in the darkness and stench, relying on scavenging and fungus cultivation to survive, and are divided and ruled by various forces.
When the "Celestial People" came underground to plunder resources and labor, young Lin Fu was forced to get involved in this game of survival. His sister Lin Fuyue's rust disease, the mysterious notebook he accidentally discovered, and the sporadic clues about the secret project "Prometheus" pushed him to the center of the storm - the legendary "fire" that can reverse the Red Mist Dome may be hidden in the hands of a certain party. In the conflict between resource plunder and the desire for civilization to survive, Lin Fu must shuttle between the two worlds to uncover the truth of the disaster and find hope for mankind to see the light of day again. This is an adventure about survival, resistance and redemption, as well as a profound torture of human nature's struggle and perseverance in desperate situations.