My grandfather is a funeral director who travels all over the streets, and he is also an old man who "knows the rules" in the countryside. When Lin Du was ten years old, his grandfather took on a job of "sending evil spirits away" - to save a young man who died violently. That night, grandpa walked into the mourning hall and never came out again. Everyone said, "I broke the rules and was taken away." From then on, Lin Du always had a question in his mind: What "rules" did his grandfather break? Fifteen years later, Lin Du became a haunted house sleep tester, specializing in spending nights in haunted houses. He used the clumsiest and most direct way to live in haunted houses, find out the "rules", and survive.
