In the Zhou Dynasty, there was an undercurrent of peace in the world. The late emperor died young, leaving the thirteen-year-old young emperor Zhou Jingyan to ascend the throne, and all political power fell into the hands of the young emperor's uncle, the regent Zhou Yi. The young emperor was submissive on the surface, but in fact he was jealous of the powerful uncle. He secretly conspired with the old prime minister Su Mingde to poison the regent in the name of marriage and achieve the goal of regaining power. However, a "substitute marriage" carefully planned by the eldest sister Su Wanqing made Su Wanrou, the silly and silly third lady of the Prime Minister's Mansion, get on the sedan chair and marry into the Prince Regent's Mansion, which made all the ladies in the capital change their looks...