In order to save human lives, a dragon prince takes on the task of ending the drought. He falls in love with a young woman, yet finds himself stuck on land for 500 years after she goes missing with his inverted dragon scale.
Because of a severe drought, the rivers and seas have dried and the people have been suffering. Ning Xiurui is the second prince of the Dragon clan. On his journey to land, he falls in love a young girl from a fishing village and gifts her his inverted dragon scale as a token of their union. As the drought comes to an end, Ning Xiurui realizes that both the girl and his inverted dragon scale are nowhere to be found. Ning Xiurui learns that the young girl escaped in the middle of the night. Thinking that he has been duped, Ning Xiurui is left to wander the lands because he is unable to return home without his dragon scale.
Five hundred years later just when Ning Xiurui was at the verge of giving up, he suddenly senses his inverted dragon scale. At the same time, a woman named Su Yinyin who looks just like the swindler who fooled him appears once more.