Gu Ting has been having the same dream for the past month. In the dream, Gu Ting's brother was kidnapped when he was a child, but in reality Gu Ting was an only son. Repeated strange dreams forced Gu Ting to investigate his family's past. After some investigation, Gu Ting discovered that he might actually have an older brother whose traces of existence were erased by mysterious forces. In order to find out the truth of the dream, Gu Ting found a detective agency that investigates supernatural events. . .