Pei Zhiwei, a young woman from Yuncheng, possesses extraordinary traditional Chinese medical knowledge passed down through her family. After gaining admission to the Beijing Medical University, she saves Lou Zhiyuan, a powerful business tycoon who has been ambushed and poisoned, on a rainy night. Eighteen years after returning to the Pei family, she must face the jealousy and schemes of Pei Zhi, the family's adopted daughter. She opens her own traditional medicine clinic, fearlessly competes in the Qiguang Cup Traditional Chinese Medicine Competition, and stands firm in her medical ethics while exposing the shady dealings and counterfeit medicine scandals of unscrupulous pharmaceutical companies. As she grows through treating and saving countless patients, the mastermind behind the conspiracies remains at large, and an even greater crisis is quietly approaching.