Ling Chen, an apprentice blacksmith in the mortal world, was hunted down by the Xuanyin Sect because the sword-shaped birthmark on his palm became the "Sword Bone One", and he was accidentally involved in the fate of searching for seven fragments of the Hongmeng Broken Sword.
He left the sect with Mo Ying, a young man from the Jiansha clan, met Su Muyue from the Wanqi Pavilion, and Lei Yan, an abandoned disciple from the Tianjian Realm, and formed a team to go to the Lingmu Valley, the Immortal Sword Tower, the Netherworld Abyss, and the Ancient Ruins in the Western Region. He collected seven fragments of earth, wood, metal, fire, water, time and space, and the core of Hongmeng to fight against the Eclipse Sword God who tried to swallow up the three realms with his sword.
From the wind and sand in the mortal world to the turbulence of the Chaos Sea, from the Entropy Formation of the World-Destroying Sword to the final decisive battle in Qingfeng Town, Ling Chen used the Hongmeng Broken Sword to kill the villain. In the end, the heroes died: Lei Yan guarded the Heavenly Sword Domain, Su Muyue guarded the Lingmu Valley, Mo Ying guarded the Netherworld Abyss, Ling Chen and Ling'er stayed in Qingfeng Town, and "saved the world" as they guarded daily peace.
