Li Youzhi was originally an ordinary young man. A supernatural misunderstanding led him to a supernatural agency. Teaming up with Tang Xiaohui, who has yin and yang eyes, the two adapt to the situation and constantly investigate strange cases in the city, briefly encounter ghosts and ghosts, solve strange and mysterious cases, and gradually uncover the truth behind different levels of supernatural beings. With the help of their mentors Lao Wang, Xiaopang and the underworld messenger Afu, several people gradually understood the complex relationship between the spiritual world and the human world. After a series of intricate and humorous events, Li Youzhi and Tang Xiaohui healed each other's childhood trauma and completed their self-growth. In the end, everyone worked together to save the spiritual world order that was on the verge of collapse. Each of the three volumes of this book has an independent main line of investigation, which runs through the growth of the protagonist and the emotional connection between partners, with both humor and human warmth.