Su Qingyan, the legitimate daughter of the Prime Minister, has pretended to be frail and plagued by coughing since childhood. As a result, her family has looked down on her for years. On the eve of her wedding, her fiancé, Lu Chengxiao, the heir to the Marquis of Zhenbei, publicly breaks off their engagement. Her half-sister, Su Wanrou, takes the opportunity to flirt with Lu Chengxiao, while the Prime Minister and Concubine Liu continually criticize and mistreat her. The entire capital is waiting to laugh at her misfortune. But what nobody knows is that Su Qingyan possesses extraordinary martial arts skills and medical knowledge. She has endured years of humiliation in silence for one reason: to uncover the truth behind the murder of her mother, the legendary healer who devoted her life to saving others.