Su Qingyan, the concubine of the General's Mansion, lost her biological mother when she was young and was bullied by her aunt and sister Su Qingyue in the house. By chance, she inherited medical books passed down from her ancestors, acquired superb medical skills, and was able to refine rare elixirs such as "Zhuyan Dan" and "Jiedu Powder". In order to protect herself, she designed to become a palace maid, relying on her medical skills to gain a foothold in the crisis-ridden harem. By chance, she rescued the frail seventh prince Xiao Jue who was secretly poisoned. The two became allies. Su Qingyan used elixirs to help Xiao Jue regulate her body and stabilize her power, while Xiao Jue provided her with protection. Faced with various frame-ups by her eldest sister Su Qingyue and the queen, Su Qingyan relied on her superb medical skills and extraordinary resourcefulness to resolve them one by one, and gradually gained the emperor's appreciation. In the end, she assisted Xiao Jue to win the fierce battle for the right to inherit the throne and ascended the throne as emperor. She also gradually became the empress of the world from a concubine.
