A young Taoist priest with extremely low qualifications from the Tianxuan Sect went down to Luocheng to slay demons and help the world. He met the mysterious boy Ji Wuyan. The two of them worked together to catch monsters and fight to level up. They thought they were close friends, but they didn't know that the other was actually the Demon Lord of the Demon World...
The dignified demon king faced many difficulties with a little-known Taoist priest, and even tried to abduct him into the demon world!
Luo Cheng didn't understand why Ji Wuyan was so persistent with him at first, until he learned about the entanglement between the two in their past lives...