Li Miao, a little transparent person at the bottom of the demon world, accidentally picked up the Zhengdao Kung Fu and lived a spiritually energetic "immortal life" in the demon world. The demon king saw that his bones were strange and ordered him to sneak into the fairy world and work as an undercover agent. Unexpectedly, as soon as he entered the Immortal Sect, the awe-inspiring righteousness surrounding him made the elders so excited that he burst into tears and was regarded as a "person favored by heaven". The Demon Lord wants him to cooperate inside and outside, and the Immortal Sect wants him to be the leader of the righteous way. Seeing the demonic energy in his body that was about to disappear, Li Miao collapsed in his heart: "Is it too late to surrender now?" He had no choice but to bite the bullet and continue to "cultivate immortality" in the immortal world, but he didn't know that his every move was regarded by the demon world as a hidden undercover skill, and by the immortal world as a model of pure kindness and justice, and he just wanted to live quietly.