On the night when the Nine Tribulations occurred, Chu Jie knelt in the pool of blood and smiled, and the entire world of cultivation never had peace again. The wasted young man who was sacrificed became a demon lord, and the cold-sword killer Su Jin was ordered to hunt him down, but he glimpsed his forgotten memories in the blood. The medical girl Bai Zhao gave him a chance to survive, and the bone fragments of the mute slave Mo Yu concealed the sect's ten thousand-year taboo. When the devil awakens and the fairy world collapses, who is the real abandoned person? Each of them had knelt down, but only Chu Jie stood up with a smile.