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Maomao, a young girl with a talent for healing with liquid herbs, is forced to work as a humble maid in an inner palace. Although she longs for a life outside the luxurious halls, she doesn't want a boring life! Using her wits to break the "curse" that has afflicted the empire's heirs, Maomao catches the eye of the handsome ruler Jingshi and is promoted to food taster.

But Jingshi has other plans for the young herbalist, and soon Maomao will be back to making medicine and... solving mysteries!