In 1970s London, a series of mysterious deaths prompt Scotland Yard to investigate a satanic cult operating in the city. Inspector Murray enlists the help of occult expert Professor Lorrimer Van Helsing. Their investigation leads them to a reclusive property owned by the secretive reclusive billionaire, D.D. Denham. Murray and Van Helsing find that the cult is not merely indulging in rituals but is actually trying to bring forth an ancient evil.

Van Helsing soon discovers that Denham is, in fact, Count Dracula, who has survived for centuries and harbors plans for global domination through a mass outbreak of a deadly plague. Van Helsing, with Inspector Murray and a small group of allies, must act quickly to thwart Dracula's apocalyptic scheme while navigating the dangers posed by the vampire’s followers and various traps. The battle pits Van Helsing's deep knowledge of the occult against Dracula's undying malice, leading to a climactic showdown to protect humanity from utter annihilation.