Despite doomsday warnings from throngs of locals, wealthy industrialist Robert Caine makes the controversial decision to build a nuclear power plant near a sacred cave inthe Middle East. But before Caine can reap the benefits of his latest bid for global domination, he discovers that his son, Angel, is the Antichrist, who is planning to use his father's project to trigger the end of the world. As Caine digs deeper, a string of suspicious accidents occur that kill off prominent figures who criticized the project. He also notes similarities between the design of the plant and features of a biblically-prophesied beast that will herald the apocalypse. During a dream, Caine envisions the plant rising from the sea, then sees its circle of towers take on the form of a multiheaded monster. The film was released with 2 endings. The Europeangeneral release version of the film features an open ending, with Kirk Douglas in exile with his newborn child, and his adult son now successfully developing the plant intended to cause Armageddon. In the shortened version released in U.S. theaters, home video, and network television, a new ending was added where Douglas returns to the company and enters a board meeting having explosives hidden on him. In the final scene, Angel's face is overlaid with an image of an explosion, showing that Robert has successfully thwarted the apocalypse. The U.S. DVD from Lionsgate retains the original darker ending.
In contemporary reviews, the Monthly Film Bulletin referred to the film as "the wildest farrago yet to have come out of the demonology genre". The review found that "the religious allegory adds little weight to the confusion of the plot" In a retrospective review, AllMovie described the film as a rip-off of The Omen but still "offers some creepy fun for fans of Euro-horror." The review noted unique additions to the plot such as political and corporate intrigue and the fear of nuclear energy and civil unrest in the Middle East." The review also noted De Martino, who "gives the film a glossy touch during the non-horror moments but brings plenty of verve to the shocks: his best moment is a nightmare sequence in which Douglas hallucinates the nuclear plant he is working on rising from the sea and transforming into a multi-headed hydra."
