Shen Qingci, a female disciple of the Qingyun Sect who was expelled from her sect after her spiritual roots were deposed, picked up a rusty broken sword in a mass grave in desperation. She shed blood to identify its owner in order to bet on a chance of survival, but unexpectedly awakened the ancient monster Jiazui that had been sealed in the sword for thousands of years. The violent power shattered hundreds of miles of mountains, and Yaizhen was unable to solidify due to the damaged seal. He actually shared a body with Shen Qingci - every full moon night, Yaizhen's consciousness would occupy his body, and Shen Qingci could only huddle in the corner of his consciousness, watching his hands tear apart the enemies that kept coming.
The Immortal Sect regards Shen Qingci as a scourge to destroy the world, but the demonic sects covet the power of the monster and want to take her body. Desperate, Shen Qingci accidentally activates the Ten Thousand Ghost Path System, transforming ghost cultivation into a quantifiable upgrade path. By completing the tasks issued by the system to explore secret realms and kill evil cultivators, he accumulates cultivation step by step, just to find the erased inscription on the broken sword before completely transforming into a beast, and to unlock the truth of the thousand-year seal.
But what Shen Qingci doesn't know is that she is an orphan of the ancient demon-slaying clan. Once this identity is exposed, it will not only attract the siege of the entire immortal world, but also put her and Mo Yuan, who has been silently helping her, into a desperate situation. Driven by profit, the immortal sect elders teamed up with the devil to set traps again and again, not only to seize the broken sword, but also to destroy all Shen Qingci's escape routes; the monks all over the world regarded the ghosts as heretics and shouted at her to beat and kill her. Gender prejudice made her not even qualified to practice openly. Shen Qingci had to suppress the demonic beast in his body, avoid being hunted, and keep his feelings for Mo Yuan amidst secrets that might be exposed at any time.
