After being abducted and made to serve in the ancient Chinese imperial court, Maomao, a 17-year-old girl, maintained her composure and inquisitive nature. She put in effort as a servant until fate intervened, and she learned that the emperor's two infants were seriously ill. Armed with the pharmacy skills she picked up in the impoverished red-light district where she lived, Maomao intervened on the down-low. Despite trying to keep a low profile, Maomao's abilities did not go unnoticed by Jinshi, a powerful eunuch. Consequently, she ended up in the emperor's inner court, using her distinct personality and expertise to resolve numerous medicinal puzzles and establish a reputation for herself.