In a flashback, the Lone Gunmen meet for the first time and join forces with Mulder to stop a covert government experiment that may be targeted at the American public.
The Lone Gunmen encounter Susanne Modeski while infiltrating a defense contractor's conference in Las Vegas.
Cell phone records and a former boyfriend lead detectives to suspect the husband of a supermodel (Brooke Shields) in the death of a teenage party girl.
B.D., plotting revenge against J.R., makes contact with Sue Ellen; Ray and Clayton immerse themselves in work to forget their troubles.
Michael tries to save an Indian burial ground from a greedy oil man.