Hundreds of years ago, humans, demons, demons, and immortals coexisted in harmony, but the peace was broken by the rise of the evil force "Li". People in the "Fence" committed all kinds of crimes, including burning, killing and looting, which triggered a coalition of all ethnic groups to rise up in resistance. When the war situation is critical, a mysterious pearl suddenly appears in the stars of the immortal clan, driving away the evil spirits with the power of destroying the heaven and the earth, bringing about a short-term peace. After Mingzhu turned into a girl, the fairy clan sealed part of her divine power to protect her. She would become the cold, beautiful and talented Xiyueying in the future.
Many years later, disciples and people from all races disappeared mysteriously. Under the surging undercurrent, the demon and fairy tribes decided to send Xi Yueying and Bai Qingyu to jointly investigate. Bai Qingyu has a tall figure and strong magical power. He and Xi Yueying develop a secret love while fighting side by side, and each becomes the other's most solid support.
However, a greater crisis quietly came - "Li" regrouped in an attempt to resurrect the ancient beasts and subvert the three realms. The heroine, the hero and their companions resolutely embarked on the road of blocking, and a tragic battle broke out. Facing the extremely vicious enemy, the shadow of death enveloped everyone, and the ancient beast was finally awakened. Bai Qingyu fought until he was exhausted and his life was in danger. Xi Yueying knew that only by sacrificing herself could the situation be reversed. She resolutely lifted all the seals, sacrificed her soul, and used her last bit of strength to seal the beast again.
The smoke cleared, the world returned to peace, and the remaining forces of "Li" were imprisoned. But the shadow of the setting moon disappeared between heaven and earth...
Mission: All people in the world live in peace