The Lin family are descendants of the Dragon Emperor of the Nine Heavens Continent. Their ancestors once ruled the continent with the Saint-rank Dragon Emperor's Boundless Art. But after their bloodline weakened, the inheritance dwindled to the Heaven-rank Nine Heavens Dragon Emperor Art and fragments of the Profound-rank Dragon Emperor Heaven-Shattering Fist, while the tokens of their lineage were lost.
Lin Fan was a bloodline prodigy, one rarely seen in the Lin family in a century. At twelve, he was poisoned with Dragon Poison Powder by his clan uncle, Lin Batian, and became a good-for-nothing. His father, Lin Xiao, went to the border of the Demon Abyss Domain in search of Dragon Saliva Grass, the antidote, but stumbled upon the Demon Emperor's scheme to break his seal by extracting dragon blood and devour the continent. He died at the hands of demonic cultivators, carrying the three tokens he had found: a black jade, a dragon-patterned token, and an ancient sword. As Lin Fan's mother, Lin Xueyao, fled with him, Lin Batian, who had joined forces with the demonic cultivators, killed her.
As he lay at death's door, the tokens resonated with Lin Fan and awakened the Nine Heavens Dragon Emperor Art. He was cured of the Dragon Poison Powder and returned to the Body Tempering Realm. To exact revenge and stop the Demon Emperor, he took the tokens and joined Yun Qingwu, who wielded an Ice Soul Sword, and Xiao Yan, who refined Demon-Slaying Pills. Together, they ventured into the Netherworld Illusion Realm in the Qingyun Mountains, where the essence of a dragon soul and clues to the Dragon Emperor Heaven-Shattering Fist lay hidden.
Drawing on his inheritance, Lin Fan broke through one level after another. He drove off demonic cultivators and fought puppets with his dragon-qi killing moves, vowing to complete the cultivation art and protect his bloodline, so the shadow of the dragon would shine over the Nine Heavens once more and the Demon Emperor's scheme would be crushed.