A modern military engineering genius transmigrates into a desolate realm, becoming the despised young master of a sect. After the sect suffers a devastating attack, its surviving members are forced to take shelter in a dilapidated temple. Thinking outside the box, he uses the local mineral deposits to forge defensive weapons. He unites his fellow disciples to build a city and workshops, develops industries, establishes medicinal gardens to study healing herbs, and opens schools for both academic and martial arts training. When defending against bandits and enemies, he favors clever strategies over bloodshed, and deals fairly with sect members who harbor selfish ambitions. In the end, he builds Xuanjian City into a prosperous and peaceful home where different clans and peoples live in harmony. Using his ingenuity, he protects his friends, family, and fellow disciples, achieves an inspiring comeback, and carves out a path of growth through industry and the protection of the people.