This story about the Celestial Master is set in modern times. The first volume mainly takes place in a school. It was originally a grudge between students, but it slowly developed into a war between the Celestial Master (earth immortal) and the demons, monsters, evil spirits, warlocks, and zombies hidden in the human world.
The beginning of the story is very simple. The protagonist is Shen Fei. He was a student with a gangster heart. He accidentally got into a car accident because he saved a girl. After his death, his body was taken away by the newly appointed 9th-grade Post-Budian Master Qingcheng. There are 9 levels of Tianshi. The ninth-grade Post-Budian Master is the lowest level and is responsible for dealing with some unruly demons and evil spirits in the human world. Qingcheng took Shen Fei's body and came to the human world to take office. However, he could not reveal his identity, he also had to fulfill his duties as a heavenly master, and he also had to deal with the mess left by Shen Fei during his lifetime. However, he gained an unexpected love in the process. What even Qingcheng didn't know was that this relationship had been reincarnated for several lifetimes.