Ning Yechen, the demon king who unified the six realms a thousand years ago, was tired of the strife and lived in seclusion in the valley of the human world. By chance, he fell in love with Luo Ruying, a saint from the fairy world who was in trouble. Ten years later, Luo Ruying took her daughter to look for her every night. She was seriously injured and was hunted down. Ning Yechen hid his identity and secretly protected his wife and daughter, accompanying them back to the fairy world to face the conspiracy from all sides and the Great Sun Fairy Court. After many crises, he protected his wife and daughter and cleared their grievances. Finally, the family of three returned to the human world and lived a stable and happy life in seclusion.
