At the edge of the universe, nine realms are interconnected by mystical forces, each governed by eternal rulers responsible for maintaining the balance of life and death. However, amidst the eternal tension between realms, conflict and betrayal have become a part of existence. Within this chaos lies a legendary figure named Xiao Jian, a warrior born into a humble family, chosen by fate to embark on an extraordinary journey. Although Xiao Jian is an ordinary human, he has carved his name in the world of warriors. Through perseverance and dedication, he took Zhen Yue as his disciple, forming a strong bond between them. However, a cruel twist of fate strikes when he is betrayed by those closest to him—an immortal emperor consumed by ambition. In a sudden assault, Xiao Jian loses everything: his friends, his disciple, and his life. Yet, the darkness that claimed his life was not the end. He is resurrected by an ancient power that offers him immortality at an unimaginable cost, and Xiao Jian returns as the Slaughterer, a being devoid of mercy, created solely for destruction.