After transmigrating, Shen Mingtang becomes the legitimate daughter of the Shen family, whose household has been confiscated and whose members have been exiled to the Western Regions. Facing persecution by treacherous ministers and the desperate conditions of the desert, she relies on her agricultural expertise to find water sources, improve saline-alkali soil, and grow high-quality sweet melons and red grapes. She also wins over the prison guards and bandits, opens weaving workshops, and establishes trade routes, transforming the barren Red Sand Beach into a vast golden land spanning tens of thousands of mu. When merchant caravans return to the capital, she crushes her enemies through commercial warfare, exposes the injustice suffered by the Shen family, and restores her family's honor. From a prisoner at the bottom of society, she rises step by step to become the most renowned imperial merchant in the land.