The play mainly tells the story of an 18-year-old down-and-out noblewoman, Ran Yan (played by Zhou Jieqiong), who has been learning the art of autopsy since childhood in order to find out the truth about her mother's suicide. After she grows up, she happens to meet the Minister of Justice Xiao Song (played by Li Chengbin), the desperate killer Su Fu (played by Pei Zitian), and the genius scholar Sang Chen (played by Lan Bo), and solves one murder case after another, and encounters true love in the process of seeking the truth.