In her previous life, Su Ya and her mother died tragically at the Qingjiangpu dock. Once she returned, she used storytelling and writing scripts as a cover to collect clues and plan step by step in the undercurrent of Huai'an City. To avoid disasters and find the real culprit, he and Hanlin Shenhuai, who was traveling in hiding, were involved in many disputes between the court and water transportation.