Feared by many, the notorious Yiling Patriarch, though long deceased, instills dread with his dark legacy of raising the dead through demonic cultivation. Reborn into the body of a deranged man, Wei Wuxian, also known as Wei Ying, resurfaces in Mo Village, disrupting the peace held by a prominent cultivation sect. His return is marked by chaos, sparked by a malevolent dismembered arm seeping demonic power. Amidst this turmoil, the enigmatic Lan Wangji, seemingly at odds with Wei Wuxian, unexpectedly emerges to aid him. Together, as they untangle the mysteries surrounding the ominous limb, they encounter familiar faces—both allies and adversaries—from their past, delving into Wei Wuxian's tragic history and the events leading to his demise.