Yun Qingxi, the daughter of a general, accidentally married into her eldest brother, who died of poisoning on the wedding night. From then on, Yun Qingxi lived as a widowed concubine in the harem, and accidentally became the "sister-in-law" of all her brothers. The "sister-in-law" is a peerless beauty who has attracted the attention of the whole country, and with the emperor's approval to remarry her elder brother, Yun Qingxi has been going back and forth between her elder brother and her elder brother for thousands of times, staging this somewhat absurd love affair. The hatred of killing her husband and the love that moves the world will be forced on a graceful woman who has seen through the world of mortals. Let's see how she helps her sweetheart seize the imperial power and make the world laugh!