As the daughter of the Minister of Punishment, Shen Zhiwei was accidentally involved in a court conspiracy due to an incident at a palace banquet. In order to clear her family's grievances, she stepped into the prison field that was supposed to be dominated by men as a daughter, and repeatedly solved strange cases with her extraordinary talents. On this thorny road, she met the regent Xiao Heng, who was selfless but secretly guarded her. The two went from being against each other to getting to know each other, and together they uncovered shocking secrets and reshaped the court structure.