Bureau 749 is a special organization hidden within the state system. It handles supernatural, mysterious, and bizarre cases that fall beyond the reach of conventional criminal investigations. Its members are highly intelligent, psychologically resilient specialists from a range of fields, including criminal investigation, forensic medicine, metaphysics, biology, and physics. The cases recorded in its files are all sealed top secrets. Behind each lies an eerie truth beyond human understanding, and the investigations are riddled with false leads and logical traps, with conclusions that overturn conventional wisdom. The story unfolds through the eyes of Lin Shen, a new Bureau 749 recruit, a criminal investigation prodigy with a touch of empathic psychic ability, as he gradually uncovers the bureau's deeper secrets.