Since ancient times, everything in heaven and earth has laws.
The six realms of heaven, earth, humans, asuras, yakshas, and animals wax and wane and grow and develop endlessly. Among them, the human realm is the most prosperous.
When a person dies and his body is destroyed, his soul descends into the Hall of Yama and is sentenced to the six realms.
There are exceptions to everything. There are always evil ghosts who are trapped by the human world and refuse to fall into reincarnation. As a result, all kinds of weird and supernatural things breed in the human world, and the people suffer deeply from them.
In the world, there are always miraculous people who have the ability to exorcise evil spirits and subjugate ghosts. They are known as "ghost masters". People who are haunted by ghosts are looking for such experts one after another. They either pay homage to them or plead with them, hoping that they can use their magical powers to exorcise evil spirits and subjugate ghosts.
According to legend from mouth to mouth, such strange people are regarded as gods by the people who are troubled by ghosts. However, while their status is respected, they are also jealous of evil spirits.
The mutual hunting between ghost masters and evil spirits never ends, and this book begins with "ghost masters".