Ye Hanyuan, the orphan of Leng Yuan who was tortured by the Lord-devouring Ancient Ghost in his body, rescued Su Wanshuang, the former Talisman Master who turned into a semi-ghost due to the backlash of forbidden magic. When the ghost mother of Jiuyouyin City quietly awakens, the half-human, half-puppet intelligence dealer Liu Wuying, and the female Pavilion Master Yun Qiyue of the Tianji Pavilion who is cursed by the destiny mark appear one after another. A thousand-year conspiracy with the blood contract as the guide and the lock of the abyss as the key is slowly opening its net. The two gradually got closer while using each other, but found that each other's fate had been woven into the same coffin by the ghost mother.
In order to find out the truth about the genocide, Ye Hanyuan sneaked into the Yin City with the mysterious nightmare in his body, and was forced to form an alliance with the semi-ghost Su Wanshuang to jointly unravel the connection between the 'Tongyoulu' and the 'Abyss Lock'. Liu Wuying secretly spread false news about the ghost mother's resurrection, triggering various forces to pursue her. Yun Qiyue was shocked to realize during the deduction that Ye Hanyuan's blood was the key to unlocking her own curse - and all of this was a reincarnation carefully planned by the ghost mother Qinghuai. As Xuan Yan's memory gradually awakened, Ye Hanyuan discovered that the Leng Yuan clan was not destroyed, but voluntarily sacrificed themselves just to seal the ghost mother. Su Wanshuang, in her obsession with resurrecting her master, gradually realized that Qinghuai had already swallowed the real master. The relationship between the two went from suspicion to symbiosis. In the bloody battles and soul resonance in the Yin City, Ye Hanyuan began to learn to trust, and Su Wanshuang gradually let go of her obsession. However, in order to prevent the opening of the Abyss, Yun Qiyue chose to seal Ye Hanyuan with her life as a talisman.
