The three realms are divided into three realms: heaven, man, and the underworld. The heaven realm is respected by the Nine Heavens, and the East China Sea Dragon Clan guards the four seas. After the war between gods and demons thousands of years ago, the heaven established an iron law of "forbidden marriage in the three realms", and those who violated it would be punished by thunder from the sky. Ao Guang, the Dragon King of the East China Sea, helped the young girl Ao Ling transform and sent her to the Siming Hall to practice, but he didn't know that the ancient Yinglong essence was sealed in her body - the day this bloodline awakens, it will cause catastrophe in the three realms.
