The story begins when the global phenomenon known as the “Ghostly Fog” erupts, and Shen Yuan's younger sister, Shen Wei, vanishes inside it. Seeking the truth, Shen Yuan willingly enters the world of “supernatural instances.” With his absolute rationality, born from losing his sense of fear in a childhood accident, and his talent for psychological profiling, he reads human nature, cracks the rules, and exploits loopholes in these rule-bound horror scenarios, gradually uncovering the conspiracy behind the System.
