He was born at 6am on the 6th day of the 6th month. The coming of Armageddon, the site of the final confrontation between the forces of good and evil, as foretold in the Book of Revelations, will begin with the birth of the son of Satan - in human form. Unable to tell his wife Katherine (Lee Remick) the tragic news of their still-born son, American diplomat Robert Thorn (Gregory Peck) accepts a new-born orphan as his son. Details of the child's birth remain a secret, but as the boy Damien grows older, it becomes apparent that he is no ordinary child. As mysterious deaths and strange warnings occur, Robert Thorn slowly becomes aware of the hideous evil behind the child's innocent face and the significance of the numbers 666, which bring about the most terrifying of revelations.