Nazi-occupied Romania, 1941: In a small and gloomy village hidden deep in the mountains, German troops have arrived to lay siege. Although warned by the townspeople to stay out of a mysterious and ornately carved structure known only as “The Keep,” two arrogant soldiers ignore their orders and break into the obelisk, hoping to find stowed treasure, but instead unleash an ancient evil force which, with each new victim, grows stronger and more powerful. After suffering large casualties at its hands, Captain Klaus Woermann is informed that the only person who might be capable of defeating this monstrous and demonic entity is an elderly Jewish historian named Dr. Theodore Cuza, who is being held captive with his daughter in a concentration camp…