Set in the show's seventh season, the fear begins when Mulder and Scully travel to the small Rocky Mountain town of Red Falls to investigate a string of unusual murders linked to ghost sightings, the undead, and other paranormal phenomena. The agents then pursue an inhuman killer to a secret research facility in the Siberian wasteland and finally into the depths of a buried alien spacecraft. If they survive, they will unravel the mystery of the black oil and prevent the alien colonization of the planet...for now.