On a dark shadowy night, a group of four paranormal investigators go out to help a small church nestled in the Ozark Mountains. While two of the investigators are well seasoned in dealing with dark entities, the other two are mere rookies. At the church they find more than what they bargained for; they find Slender Man. While being tormented by the demon at the church during a harrowing escape Slender Man seems to want more on this night than children's souls...it wants revenge.