A paradise, a supernatural art, one master and one disciple, no desire or desire. A little apprentice who doesn't know his life experience, and a master of spiritual arts who refuses to reveal his origins, it would be fine if he keeps amusing himself in the deep mountains and old forests. But the little apprentice will eventually go down the mountain and experience disaster. Unexpectedly, a person who cultivates immortality will be reborn and travel through the secular world, bringing a variety of life experiences. With all kinds of challenges and difficulties, the position of Hell's Gatekeeper is not easy to get.