The film mainly tells the story of the little dragon girl Baixi (played by Zhang Chuhan) who visits the human world for the first time and meets Hongji (played by Kong Shuhang), a small servant who guards the temple. They then go to the capital together to look for the black dragon girl Rumo (played by Zhang Di) who is lost in love. As they accompany each other, they gradually fall in love and a forbidden love quietly unfolds. This is a tragic love story.