In the modern urban background, there is a "dark side of the abyss" that overlaps with the real world. Human beings' strong obsessions and unresolved deaths will form "evil rooms" or attract "unspeakable things" here. The official agency "Folklore Affairs Administration" (Ethnic Affairs Bureau) is responsible for handling related incidents.
Shen Guiyue, 26 years old. On the surface, he is the top facial restorer in the funeral parlor, able to make the deceased seem reborn. In fact, he is the "Abyss Messenger" numbered A-07 of the Civil Affairs Bureau. He is born with the characteristics of "absolute calmness" and the "eye of truth" (the ability to see through illusions and look directly at the "abnormal" entity). In the unnatural death cases she takes over, she is always able to discover the unresolved obsessions of the deceased and deliver the final "letter" to them.
Xie Yuan's identity is a mystery. Shen Guiyue first appeared as a "neighbor" she met on the dark side of the abyss when she was dealing with a case of "Room 404 that was never checked in" in a luxury hotel. He is elegant, mysterious, and inhuman. He seems to be imprisoned in the abyss. He is powerful but needs to follow certain rules. He developed a strong interest in Shen Guiyue. At first, he was curious and exploited, and later gradually became her most dangerous guide and guardian between the two worlds.
When Shen Guiyue was dealing with a series of "message delivery" commissions, she discovered that behind all the abnormal events, they seemed to point to a huge ancient shadow that was about to awaken. And Xie Yuan is inextricably linked to this shadow. In countless life-and-death crises and truth revelations, the relationship between the two went from mutual calculation to absolute trust, and finally faced the ultimate truth together.
Purpose: To explore the unfinished regrets and obsessions between life and death, to show respect for life, cherish emotions, and the warmth and power of human nature blooming on the edge of rationality and madness.