Mapping and surveying technology expert Lu Zhixia returns to her hometown, only to encounter clan forces forcibly occupying her family courtyard. Using industrial drones and surveying technology to gather evidence, she fights against village bullies Liu Qiang and Village Chief Liu Dagen, exposing their crimes of occupying basic farmland and corruption. Following the clues to dig deeper, she successively cracks major cases of rare earth smuggling and transnational smuggling. Using technology as a weapon, she fights against overseas capital forces, guards the national territory and national strategic resources, and brings a host of criminals to justice.