In the middle of the Dajing period, the undercurrents of the rivers and lakes and the court quietly intertwined. The Shen family was once a martial arts family in the south of the Yangtze River, but due to being involved in an old case, they were plotted and their family fortunes fell into decline. Shen Qingyan, the legitimate daughter, has been practicing swordsmanship with her father since she was a child. After her father died suddenly, she took the incomplete sword manual and a vague instruction and hid in a drug store in the market. While making a living with her medical skills, she secretly investigated the truth behind the family's tragedy.
