A demonic terror that has laid dormant for 250 years is unwittingly released in central New Jersey, a place of dense forests and rolling hills. Recurring nightmares begin to plague a rising executive, Regan Westwood, and in his vivid and disturbing dreams he sees terrifying visions through the eyes of a winged creature fulfilling an ancient vendetta. In time, he becomes aware that the dreams are actual events when he witnesses the hideous death of a company rival spurred by his own hostile thoughts. Regan realizes the power of the beast has been passed on to him, and the police make a shaky connection between Regan and the killings, but are hard pressed to substantiate their suspicions. As Regan's life begins to deteriorate he makes a last ditch efforts to rid himself of the newfound terror, but with a deteriorating marriage and pressure from his company and the police he cedes to the power. As he strengthens his alliance with the beast they spiral into an abyss of horror and murderous mayhem.