 The show centers on FBI special agents Fox Mulder ( David Duchovny ) and Dana Scully ( Gillian Anderson ) who work on cases linked to the paranormal , called X @-@ Files . Mulder is a believer in the paranormal , while the skeptical Scully has been assigned to debunk his work . In this episode , The Lone Gunmen summon Mulder and Scully to the headquarters of a video game design company after a new virtual reality game , which the Gunmen helped design , is taken over by a bizarre female computer character whose power is much more than virtual . 
