Twenty-four years ago outside a small Texas town, young Kevin Reddle watched helplessly as his oilman father brutally slaughtered his mother before being torn apart by an invisible force. Today as the county sheriff, Kevin remains haunted by memories of that night and the fear that "the damned thing" may someday return. Now as the seemingly normal citizens of Cloverdale suddenly explode in a homicidal frenzy, the one man who's uncovered the truth is about to meet his own horrific destiny.