The Warlock is taken captive in Boston, Massachusetts in 1691 by the witch-hunter Giles Redferne. He is sentenced to death for his activities, including the death of Redferne's wife, but before the execution, Satan appears and propels the Warlock forward in time to late 20th century Los Angeles, California. Redferne follows through the portal.
When the Warlock crash lands in the flat of a waitress named Kassandra and her gay roommate, Chas, he is taken in by them. While Kassandra is out, the Warlock attacks Chas, cutting off his finger with a carving knife to acquire his ring, before biting out his tongue, leaving him to die of shock. The Warlock confronts a fake psychic, tricking her into allowing her to be possessed by Satan who tells him to reassemble The Grand Grimoire, a book scattered in three pieces across the world that will reveal the "true" name of God which when spoken backwards will unmake Creation. Satan promises to make the Warlock his second-in-command if he accomplishes this task. Ripping out the psychic's eyes and using them as a Satanic compass, the Warlock finds the first piece of the Grand Grimoire hidden inside an antique table at Kassandra's flat. Whilst there, he places an ageing curse upon her and takes her bracelet. Redferne arrives with a "witch compass" with which to track the Warlock....
Directed by Steve Miner
Produced by Steve Miner
Written by David Twohy
Starring
Julian Sands
Lori Singer
Richard E. Grant
Music by Jerry Goldsmith
Cinematography David Eggby
Edited by David Finfer