Xian represents the state of immortality that all cultivators strive to attain. Yet, a dark energy lurks beneath—the forbidden Mo Dao, or demonic path. Due to an unfortunate chain of tragedies, cultivator Wei Wuxian experiments with this path during his teachings. His ascent in power brings chaos and destruction, but his reign of terror ends abruptly when the cultivation clans overpower him and he is killed by his closest ally. Thirteen years later, Wei Wuxian is reincarnated into the body of a lunatic and reunites with Lan Wangji, a former classmate. This event initiates a supernatural mystery that afflicts the clans and threatens to disrupt their daily lives. Mo Dao Zu Shi follows these two men as they embark on a mission to unravel the mysteries of the spiritual world. While fighting demons, ghosts, and even other cultivators, the two form a bond that neither had ever anticipated.