Modern electricians and equipment travel together to a rural village in the Great Ming Dynasty. Starting from pulling power grids at the village entrance to drive away mountain bandits, relying on modern electrical knowledge to build electric lights, connect radios, and build armored patrol vehicles, all the way incorporating county towns, repelling rebels, pacifying the coast, and conquering the world, building a peaceful and prosperous era where everyone has electric lights and everyone has food to eat through modern knowledge in this troubled world.