Synopsis：During the flourishing period of Tang Dynasty, the anomaly of the evil dragon happened in Qujiang Pool, causing the people of Chang'an to go bald overnight. The emperor flew into a rage. The magistrate of Huanghe County, Wang Xuan investigated the case in secret and discovered the plot of the city massacre, which posed a threat to the emperor's safety. Wang Xuan sneaked into Dragon King Sect. Afterward, he cracked the mystery of golden carp and saw through the city massacre plan. In the end, he found out the truth and succeeded in saving the emperor and protecting the people of Chang'an.