Ao Yue, the dragon girl of the East China Sea, lost her reverse scale. This scale can maintain the peace of the East China Sea, but it was accidentally picked up by Ling Xiao, the prince of Tiangong. Ao Yue went to the Heavenly Palace to look for scales, and clashed with Ling Xiao due to a misunderstanding. Later, she discovered that Ling Xiao was also investigating the "conspiracy behind the theft of scales." The two join hands to break into the forbidden areas of Dragon Palace and the treasure house of Tiangong, and uncover the villain who wants to provoke a war between Dragon Palace and Tiangong, and gradually fall in love.
