1. The Gray World Appears: The survivors gradually discover that strange changes sweep over the world each night. Areas shrouded in gray fog are full of unknown dangers.
2. Humanity Splits Apart: With resources scarce, the survivors begin dividing into different factions. Some choose to plunder, while others choose to cooperate.
3. Scientific Research: Lu Yuan and the others try to use the few devices they have left to study the effects of the crimson meteor and find a solution.
4. Special Abilities: Some survivors awaken special abilities after the disaster. These powers offer a means of survival, but also bring new dangers.
