Xu Chenzhou worked as a temporary worker in the Municipal Archives for three years. After coming into contact with a 1998 disappearance case file, he was pulled into a strange space - the crime scene was completely recreated, and the truth needed to be restored to release the souls of the dead. But every time you pass a level, you will lose a piece of your own memory. He helped everyone find the truth, but he was disappearing. What's even more frightening is that there is a case related to himself.