The ancient immortal Lord Ling Qinghan was betrayed by his best friend Mo Yuan and his Taoist companion Su Wanran. After his death and Taoist companion Su Wanran, his remnant soul penetrated into the body of the good-for-nothing junior sister of the Qingyun Sect who was falsely accused and expelled from the sect. Unexpectedly, it was discovered that this body contained a sealed chaotic spiritual root that had never been seen in ten thousand years. Relying on the dual advantages of ancient immortal cultivation memory and chaotic spiritual roots, Ling Qinghan broke the seal, repaired the natal magic weapon Qinghan Sword, and upgraded his strength along the way, vowing to avenge his betrayer.
During the process, Chu Yan, the younger brother of the Qingyun Sect, never abandons her. His "bright sword heart" physique and the true identity of the reincarnation of the Qinghan Sword Spirit are gradually revealed. He grows from a boy in need of protection to a strong man who can stand side by side with Ling Qinghan, and develops a true love for her that transcends the bonds of the Sword Spirit. After being protected by Chu Yan and witnessing the injustice in the world of immortality, Ling Qinghan transformed from a cold-blooded avenger into a strong man who abides by morality and knows how to defend his shortcomings. He formed the "Hanyuan Pavilion" to gather strength. He also reunited with the famous disciple of his previous life, Master Yunxu of the Qingyun Sect, and gained his secret support.
She returned to the Qingyun Sect, exposed the collusion between the law enforcement hall elder Xuan Yangzi, Mo Yuan, and Su Wanran, and rescued the maid Chuntao, who was loyal to the original owner. During the gradual investigation, she discovered that Mo Yuan was a remnant of the ancient demon clan. He framed the original owner and sealed the spiritual roots in order to gain power and stabilize the fake ascension realm. Su Wanran was used by him out of jealousy, and later fell into a struggle with regret. In the final battle, Su Wanran blocked Mo Yuan's fatal blow in order to atone for her sins. Ling Qinghan and Chu Yan combined their swords to crush Mo Yuan's Dao Fruit with chaotic sword intent, causing him to be swallowed by the monster and his soul destroyed. Ling Qinghan broke through the shackles of his previous life and became the Chaos Immortal, reshaping the rules of the Three Realms.
