A secluded paradise, supernatural arts, one master and one apprentice, free of worldly desires. One young apprentice who knows nothing of his own origins, and one master of spiritual arts who refuses to reveal his past. It would be one thing if they could spend their lives amusing themselves in the deep mountains and forests. But the apprentice must eventually leave the mountain and face his trials. Who would have thought that even cultivators could be reborn and transmigrate? A journey through the mortal world brings him all kinds of new experiences. With endless challenges and countless hardships, becoming the gatekeeper of hell is no easy feat.