A young maiden is kidnapped and sold into servitude at the emperor's palace, where she secretly employs her pharmacist skills with the help of the head eunuch to unravel medical mysteries in the inner court.

Nick Bannister, a private investigator of the mind, navigates the alluring world of the past when his life is changed by new client Mae. A simple case becomes an obsession after she disappears and he fights to learn the truth about her.