When he was five years old, the top of Cangwu Mountain was covered with heavy snow. As an orphan, Chen Jin has two souls, one good and one evil. The evil soul is murderous and wants to devour him. Xie Jinglan, the passing Sword Master of Cangwu, was soft-hearted and came to the rescue. He used the artifact "broken lamp" as a tool to forcibly seal the evil soul into the lamp, leaving only the good soul in Shen Jin's body. From then on, Shen Jin became Xie Jinglan's only direct disciple. He was gentle and courteous, and was the master's sharpest sword.
However, the second elder Xuan Yin has been coveting the right to rule Cangwu Peak for a long time. He secretly spied on the secret of Can Deng, and used strange secret methods to forcefully control the "evil soul" sealed in Can Deng. On the day of the marrow cleansing conference, taking advantage of Shen Jin's opportunity to deliver the elixir, Xuan Yin activated the secret method, causing the evil spirit in the residual lamp to instantly seize the body and control Shen Jin's body.
In full view of everyone, Shen Jin—or Shen Jin who was controlled by the evil spirit—smiled and struck out, piercing Xie Jinglan's spiritual core with a sword.
That sword shattered the sword master's foundation and also shattered Chen Jin's good thoughts.
Xie Jinglan's spiritual core was severely damaged, his memory was lost, and his temperament became cold and cruel; while Chen Jin, whose body was completely taken over by the evil spirit, could not forgive himself and allowed the evil spirit to take over, and fell into the devil world. For two hundred years, he killed decisively and became a feared demon king. Only the broken lamp in his hand made a faint mournful cry in the dead of night.
Two hundred years later, the war between immortals and demons broke out. Shen Jin, who has become a demon king, and Xie Jinglan, who has been reborn from blood, meet on the battlefield. The former meek disciple pointed the sword at his master's throat, but Xie Jinglan saw in those scarlet eyes the attachment that had not dissipated for two hundred years and was buried deep under the murderous intent.
The truth is revealed and Xuan Yin's conspiracy is exposed. This time, Shen Jin took the initiative to take the evil soul back into his body, merged the two souls into one, and teamed up with Xie Jinglan to reverse the situation. They stand shoulder to shoulder with the gods as mortals, one holding a lamp and the other holding a sword to quell the chaos in the three realms.
Purpose: This book aims to construct an Eastern mythological fable about "self-reconciliation" and "two-way redemption". Through the extreme settings of "Two Souls Become One" and "Master and Disciple Rebellion", it explores the symbiotic relationship between good and evil in human nature, and how love, as a force that transcends rules and life and death, completes the ultimate stitching of broken souls amidst long time and huge misunderstandings.