After the battle between gods and demons, the Demon Lord Beiming Changye fought Xingyun, the guardian deity of the human realm's dragon veins. The Dragon Vein Stone was damaged, and Xingyun offered his blood and sacrificed himself to preserve it for the time being. The Demon Realm also suffered devastating casualties. Later, Beiming Han took control of the Demon Realm and slaughtered the Red Phoenix clan, sparing only the young Red Phoenix, Ying Luo.
Shun Yu, son of Xingyun, was born of the divine maiden who guarded the Heart of Weak Water and a divine dragon defying the heavens. He was the only divine dragon in the world, born to protect the dragon veins of Kunlun Mountain. But after being schemed against and cast into a mortal body, he came to bear the bloodlines of gods, humans, and demons. On the day he was born, his biological father pierced his heart with the bitterly cold Moon-Piercing Blade, leaving him with a heart condition that would never heal. When he came of age, his divine power was unparalleled. Together with the phoenix maiden Feng Yingluo, the demon prince Jin, the immortal crane Bai Xi, and others, he gathered the Earth God Stones to repair the Dragon Vein Stone and stop demonic energy from running rampant in the human realm and slaughtering its people.
To shed his mortal body and keep the dragon spirit within him from bursting apart, he bid farewell to the Heaven Beyond Heaven and descended into the human realm to gather the Earth God Stones, nurture the dragon spirit, and repair the Dragon Vein Stone. There, he met the phoenix maiden, who also bore the heavy responsibility of guarding the Heart of Weak Water. The two were destined to meet, understand one another, and fall in love.
The young lord of the Demon Clan, Beiming Han, loved the phoenix maiden with a deranged obsession. His madness drove the two of them, step by step, toward an irreconcilable end. In one life, he was consumed by love but never won her heart. In the next, Shun Yu began his long road to winning her back, and at last found sweet love with the phoenix maiden!
Later, Feng Yingluo was gravely wounded by Shun Yu's younger brother, her twin born alongside him. The Heart of Weak Water burst forth at his command, destroying the dragon veins and reopening the gates to the Demon Realm, allowing the demons to return to the mortal world.
