Shen Yi, the real young master who was lost and raised elsewhere, is found and brought back by the Zhao family. However, he discovers that their family affection is full of self-interest and scheming. His biological father turns a blind eye to the many ways the fake young master frames him and cares only about the ancestral medicinal formula entrusted to him by his adoptive father. Disillusioned, Shen Yi severs ties with the family and returns to his hometown, where he unexpectedly activates the Divine Farmer Pearl and learns to identify medicinal herbs and improve ancient cultivation methods. He leads the villagers in reclaiming wasteland to grow medicinal plants, establishing his own Jitang pharmacy and pharmaceutical factory. He repeatedly foils the Zhao family's schemes and the blockade imposed by medicinal herb merchants from the provincial capital, defending the integrity of quality medicine. In the end, he builds the Jishi Medicinal Materials Company, leads the entire village in becoming shareholders and taking the company public, and joins hands with Lin Qingyao to develop traditional Chinese medicine, setting out on a path of nationwide expansion.