In the deep palace of imperial harem intrigues and courtyard battles, Qin Yu, the cannon-fodder noble consort who transmigrated into a book, only wants to lie flat and be a salted fish, not wanting to get involved in harem disputes in the slightest. Unexpectedly, Emperor Chu Moyan, after falling asleep, would possess objects around her, see through her salted fish thoughts, and deliberately pick a quarrel. Qin Yu counterattacks with mahjong to revitalize the harem, turning the treacherous and unpredictable days into a relaxing comedy.