Li Bufan, the last descendant of the Night God, appears to be a delivery rider, but actually inherits the ancestral "Night Patrol Book" and needs to deliver "special orders" in the early morning to suppress evil spirits.
- The "Pavilion Demon" that breeds at the junction of yin and yang will devour a specific space, and the swallowed person will become an afterimage of the same day's actions repeated forever within the wall.
- The weaknesses of ghosts conform to the structure of Chinese characters (for example: "Zombie" zombies are afraid of sunlight because the word "Zombie" is next to "", and "Nightmare" demons appear in grains of salt)
