Shen Yunjin, the daughter of a Yangzhou merchant, is smart and courageous. When she went to Beijing to bid for tribute, she unexpectedly met the prince Xiao Yan who was traveling incognito. The two didn't know each other's identities, but they fell in love at first sight and had a deep love for each other. However, there was strife in the court and the prince was forced to marry the prime minister's daughter as his concubine, so Yun Jin had to live in the side room. The first emperor died, the new emperor ascended the throne, and the harem was suddenly in turmoil. The royal concubine is jealous and the powerful ministers are forcing each other. The vows they once made are torn to pieces in the power and suspicion. Can she keep her original intention in a courtly love affair that ranges from mutual love to sadomasochistic love? Can he protect her?
