Shen Xinlan, a PhD in agricultural sciences, travels back to ancient times just as her father is falsely accused in a corruption case involving disaster relief funds, resulting in the entire Shen family being exiled to Wuling. Using her agricultural and forestry expertise to build a business, she faces suppression but receives help from Xiao Jingheng, heir to the Prince of Zhennan, to expose corrupt officials. Her cousin Shen Yuejiao sabotages her business, accidentally uncovering clues to an old case. Shen Xinlan improves rice varieties, develops water conservancy projects, and provides affordable disaster relief during a famine. Her achievements earn her the imperial court's favor, and the Shen family's name is partially cleared. Shen Yuejiao later attaches herself to a prince and steals secret formulas, but her crimes are exposed. She reveals the prince's treasonous conspiracy, finally clearing the Shen family's name completely. Shen Xinlan marries Xiao Jingheng, then returns to Wuling to farm, build businesses, and improve the lives of the local people.