Court apothecary Maomao has always approached life with clinical detachment, until she unearths forgotten scrolls claiming romantic attraction is a classifiable medical condition with measurable symptoms. Intrigued, she begins secretly documenting the besotted court ladies who flutter around the gorgeous high-ranking official Jinshi. The problem is, her tidy scientific study gets messy when her own pulse starts racing for reasons that have nothing to do with medicine. Struck between scholarly objectivity and increasingly personal observations, Maomao's research journal becomes more confessional than clinical as she struggles to categorize feelings that refuse to stay within neat diagnostic boxes. Her methodical mind might be her greatest strength as an apothecary, but it may prove useless against the most perplexing condition she's ever encountered - especially when the researcher becomes the subject of her own experiment.

In the palace, not everything is as orderly as it seems. MaoMao, a sharp and meticulous apothecary, and Jinshi, a calm and clever inspector, are paired with JingJing, who is dramatic, fearless, and occasionally reckless, to deal with the strange and unexpected. Together, they stumble through a world of mysterious powders, secret passages, and unusual rituals, never quite sure what's real, what's dangerous, or what's just JingJing's imagination. Between chasing leads, deciphering odd codes, and dodging chaos at every turn, MaoMao and Jinshi find themselves growing closer, their partnership quietly deepening into a tentative and unspoken affection, even as they face unpredictable adventures and constant mishaps. Full of humor, mischief, and small moments of connection, this story is about teamwork, curiosity, and how even the most unusual companions-and the most unlikely feelings-can blossom when the palace throws the unexpected your way.