Jiang Tingxue, a talkative young woman who is the "fake heiress" of the Duke's estate, accidentally discovers that her entire family has not dared to speak for thirteen years in order to guard a secret concerning the stability of the country. After the real heiress returns, storms continuously arise; while cleverly resolving them, Jiang Tingxue exchanges letters with her mysterious pen pal "Lao Xiao". With the Empress Dowager's birthday banquet and the grand wedding ceremony changing consecutively, she finally understands the deep emotional guardianship behind her family's silence. In the end, joining hands with Emperor Xiao Yan, she exposes the conspiracy, defends loyalty and righteousness, and allows the Duke's estate to regain its laughter, welcoming a bustling yet warm new life.