The notorious demonic master was betrayed by his henchman and got killed. But unexpectedly, he was reincarnated as Mo Fan, a Taoist priest, a cultivator, and a loser. Hundreds of years after the fall of the demonic master, the demons are now slaves of humans. The disguised "Mo Fan" lives with Taoist priests and discovers the mysterious connection between "demonic cultivation" and "Taoist cultivation" accidentally.