Li Gui was originally the humblest servant of the Cangyun Sect, and was regarded as an unlucky person because of his natural demonic bones. Demon Lord Xiao Wujiu slaughtered the entire Cangyun Sect with blood in order to seize the sect's most precious treasure, the "Tianwei Monument". When Li Gui was on the verge of death, a cold whisper came from the sea of consciousness - "The sacrifice system has been bound, everything can be sacrificed, equal exchange, no promotion until death." At the cost of one of his left eyes, he crawled out of the sea of blood from the mountain of corpses and embarked on a path of demonic cultivation paved with bones. Sacrifice the corpses of fellow sect members in exchange for the initial achievement of magic power; sacrifice the lives of a city in exchange for a skyrocketing increase in cultivation. He has no bottom line in his actions and is as crazy as a ghost. Anyone who stands in his way, whether good or evil, will all become sacrifices in the system. While avoiding the righteous encirclement and suppression, while frantically encroaching on the power of Demon Lord Xiao Wujiu, the evil ghost went further and further in the blood. However, he gradually discovered that the so-called sacrifice system did not come out of thin air. It was slowly transforming him into a disaster more terrifying than the Demon Lord. At the end of this revenge and escalation, will he kill his enemy with his own hands, or will he drag everything and himself into the abyss of eternity?