After the collapse of global IQ, human beings lost complex knowledge and fell into an apocalyptic chaos of violent plunder and lack of resources. Lin Zhou, who was once an ordinary person, became a "beacon of knowledge" in the chaos by virtue of his mastery of basic science.
He led the survivors to establish a stronghold in an abandoned elementary school, used the principle of leverage to build a trebuchet to defend against enemies, used the photovoltaic effect to build energy station lighting, and used chemical knowledge to drive mutant rats and make disinfectants. He gradually developed the simple stronghold into "Qiming City" - it has clean running water, a medical hospital that can treat diseases, and a classroom for imparting knowledge. The number of people has increased from dozens to 300, making it the largest human gathering place within a hundred miles.
During this period, they defeated the predatory Ax Gang, the Shadow Clan who coveted knowledge, and neutralized the threat of the Black Wind Riders. However, they attracted the covetousness of the "Steel City" who controlled the old arsenal. The mysterious old man Lao Gu appears with a secret map of the Energy Research Institute, saying that it contains key technologies to fight against the Steel City. However, the covered "X" mark in the map and the abnormal coal consumption in the city hint at a new crisis.
In order to protect the light of Qiming City, Lin Zhou decided to lead an elite team deep into the research institute. An adventure related to the survival of human civilization quietly began in the unknown wilderness.
