Xiao Yuan Shi, the son of the emperor and Empress Xun, is being treated by guru Pu Yang Ying. Duan Tong Zhou, the private advisor of Minister Song, is in Datong to find the missing witnesses of the ship wreckage and to ensure all evidence is disposed of. Xiao Yuan Qi, the Prince and Marqui of Laiyang witnesses the accident and saves the witnesses. He meets with Ping Jing and Lin Xu, helping them to uncover the conspiracy behind the shipwreck. (Source: frankly at MyDramaList)