Maomao tries to settle into her promotion to lady-in-waiting and food taster, but struggles to fend off both boredom and the overly-familiar Jinshi. That is, until she gets an assignment of her dreams: to concoct an aphrodisiac.

After being kidnapped and forced to work as a servant in the rear palace, former apothecary Maomao inadvertently draws the attention of the higher ranks when she investigates what's causing the emperor's infant heirs to fall mysteriously ill.