When the ancient immortal sect was in decline, Shen Ruxue, the chief disciple of the Taiwei Sword Sect, was famous for her outstanding talent, but she hid the secret that "the spiritual bones were stolen" - she personally pushed her master into the devil's abyss and exchanged the bones with forbidden techniques. Su Tinglan, a new servant disciple, is gentle and cowardly, and is often haunted by the nightmares of the Bone Abyss. In fact, he is the reincarnation of the remnant soul of Xie Wujiu, the fallen demon "old sword master". He approaches Shen Ruxue just to regain his spiritual bones.
Taiwei disciples died one after another from the "White Bone Flower" cursed by the Demonic Abyss. Shen Ruxue was ordered to investigate. Su Tinglan followed secretly, but they were trapped in the illusion of Guixu Mirror together. In the fantasy, the two turned into a couple, and the scene of Shen Ruxue dying to protect Su Tinglan made Su Tinglan begin to suspect that she had forgotten the key past. Shen Ruxue also frequently dreamed of killing Su Tinglan, and she cried deeply in the middle of the night.
When Su Tinglan's memory was completely awakened, the truth about "killing masters and seizing bones" a hundred years ago (the truth she believed) made her set up a deadlock in the Abyss of Bones. Shen Ruxue knew it was a trap but still voluntarily died. She said "If this is what you want, I will give it back to you", which made Su Tinglan collapse at the last moment when she pulled away the spirit bones - the tearing of hatred and love made it impossible for her to start.
But reversals came one after another: Su Tinglan discovered that Shen Ruxue changed her body in order to bear the curse for her fallen demon, and it was her own request to "kill the master". Shen Ruxue had to bear a hundred years of infamy. What's even more fatal is that Su Tinglan is the body of the Demon Abyss, and her soul is the core of the seal. If she wants to save the Three Realms, she must die...
