More than 20 years ago, the demon king Fang Tianhua accidentally met Song Yunxian, the lord of the Rainbow Palace. Yunxian was so beautiful that he was extremely arrogant. However, the gods and ghosts were in trouble, but the demon king finally got what he wanted. After several twists and turns, the demon king finally got what he wanted and married Song Yunxian, who was much younger than him, and they loved each other for half a year. One day, the demon king heard that his wife was pregnant and was very shocked. The next day he said that he had something to do. After a while, he came back for several years. Song Yunxian hated him for being heartless and abandoned his daughter to find him.