Li Yang is a ruthless, uncompromising sword cultivator who has been reborn. As a disciple of the Xuantian Sword Sect, he is ordered to escort Shen Lu'er, a junior demonic cultivator who murdered her fellow disciples, to the Demon Realm. When they reach Wanxiang City, he publicly executes Shen Lu'er and directly confronts the Six Desires Demon Venerable. As demonic threats spread throughout Yongning Commandery, Li Yang, despite possessing only half-step Foundation Establishment cultivation, slays several demonic cultivators and prodigies of the righteous sects. In a desperate moment, he pierces Ning Qingfeng's mortal incarnation with a single sword, unexpectedly gaining the opportunity to experience the Phoenix's Nirvana. As prodigies from various sects come seeking revenge, Li Yang steps onto the life-and-death arena and defeats one formidable opponent after another. When a secret realm opens and a legacy of the Killing Dao emerges, Li Yang enters the fray with his sword, proving his swordsmanship through slaughter.