In 2187 AD, the "grey cold wave" swept across the world, and human civilization returned to the steam age overnight. Energy was exhausted, science and technology failed, and 90% of the cities were reduced to ruins and "rust belt areas". College student Lin Ye awakens the "Civilization Repair System" in the shelter. As long as he collects scattered technological fragments, rebuilds functional strongholds, and rescues "Tinders" who have mastered key knowledge, he can gradually unlock electricity, network, artificial intelligence and even interstellar navigation technology.
He took the system to retrieve the first old generator from the ruins, and formed a team in a life-and-death battle with predators for resources. However, he discovered that the "grey cold wave" was not a natural disaster, but a "civilization screening experiment" by higher civilizations on humans. From repairing a small town's power supply system, to rebuilding transcontinental trade routes, to uniting survivors around the world to fight against alien observers, Lin Ye's every step is rewriting the countdown to the extinction of human civilization, and the secrets hidden behind the system are actually closely related to the origin of mankind.
