Shen Jialan (played by Tan Songyun), the eldest granddaughter of the Grand Secretary's Office, and Lin Jinlou (played by Liu Xueyi), the Changsun of the Lin family of the Ministry of Personnel, entered into a marriage contract. However, the situation in the court suddenly changed. His grandfather Shen was convicted of treason and the Shen family was tragically destroyed.In order to protect themselves, the Lin family broke the engagement with the Shen family and married the Zhao family, the imperial upstart.Xu Wanquan, a Lin family slave who had been helped by Shen Jialan's mother, had replaced Jialan with her newly ill daughter Xu Lanxiang.From then on, Jialan became a third-class maid in the Lin Mansion with Xu Lanxiang's identity.

In the difficult situation, Lanxiang did not bow to fate, and always worked hard for her and her family's happy life, resisting all injustice and oppression.In the end, Lan Xiang broke through the shackles of class identity with her kindness and intelligence, and won Lin Jinlou's love at the same time, gained the conviction and respect of the Lin family, became the head of the Lin family, firmly controlled her destiny in her own hands, and helped the Shen family to clean up grievances and seek justice.