The male lead guarded the arena for three years to make contributions to his family, but was betrayed and had his fire spirit bone extracted, leaving him on the verge of death. Using a portable black fish hook, he fell into the Demon Sea, received a gift from a demon guide, and mastered the Nine Dragons Demon Scripture to make a comeback. Amidst the internal turmoil of the Qin family, the male lead returned to protect his family, shattered trial records in the clan grand competition, exposed the crimes of his enemies, retook the position of family head, and won the qualification for selection by the Tianyang Sect. After entering the sect, he repeatedly broke records, won supreme treasures to be promoted to holy son, and successively defeated his arch-rivals. In the end, the male lead slayed all the villains, dueled the demon lord who had broken through to the quasi-emperor realm, and opened the heavenly realm passage to save the female lead who had been ambushed, as a heavenly calamity approached.