The Shen family was in danger because of being involved in an "imperial examination fraud case", and the eldest brother was imprisoned. In order to save her brother, Shen Weiwan took the initiative to contact Lu Xiao, the commander of the Zhenfu Division who came to ransack his home. She handed over a gold-illuminated folding fan that she had painted by herself - the painting on the fan actually accurately restored the murder scene of the Minister of Justice who died in the secret room three days ago with no clues.
Lu Xiao was shocked and listed Shen Weiwan as a suspect. However, he discovered through trial and error that this girl who seemed to be knocked down by the wind had courage and mysterious abilities that no one else could match.
