As the painting of The Temptation of Christ hangs ominously on the wall, young Samuel Morgan is plagued by its haunting presence. But it's not just the painting that's causing him anguish. Samuel's involvement in the occult with an insane witchcraft scientist, Alan Wilson, has set free a terrifying demon—Beelphegor—with devastating effect.

Desperate for a solution, Samuel's mother, Marilyn Morgan, seeks help from doctors and psychiatrists. But their support is ineffective in the face of such malevolent forces. In a last-ditch effort, Marilyn turns to Reverend Stephen Mason, a priest-counsellor known for his expertise in exorcisms. But before he can begin the daunting task of driving out the demon that possesses Samuel, Reverend Mason must first overcome his own faltering faith and uncertainties about God.

As the battle between good and evil rages on, the stage is set for a final showdown between the reverend and the demonic Beelphegor on holy ground—where the fate of Samuel's soul hangs in the balance.