Shen Hansu, an orphan girl from a poor family, was forced to marry into the village chief's family to marry her sick eldest son, Lu Yanshu. With a meek appearance, she secretly runs a medicinal business by collecting herbs, quietly accumulating strength in the barren countryside. Her "sick" husband was actually wrongfully accused and lived in seclusion here to avoid trouble. The husband and wife each have their own secrets, and they gradually see through each other's disguises while testing each other. Lin Qingdai, the granddaughter of the village doctor, became Shen Hansu's only ally, but the shrewd and jealous Aunt Zhao made things difficult for her at every turn. When Shen Hansu assisted Lu Yanshu in tracing old cases, he even attracted fierce suppression from the squire Song Huaiyuan. From being on guard to knowing each other, two smart people join hands to fight against the oppression of the entire feudal system in the crisis-ridden rural life. They used the countryside as a chess game to plot a turnaround that would change their fate.