The episode opens with Byers saying he has a recurring dream of having a happy life with Susanne Modeski in a peaceful and clean country, but that it always ends with him losing everything. The Lone Gunmen go to a defense contractor convention in Las Vegas to try to learn a few trade secrets, but are kicked out of a high stakes poker game when their identities are blown. Frohike knows that Byers is trying to track down Modeski at the conventions, but says it's been 10 years and she's most likely dead. However, Byers soon finds her in a casino.
The Lone Gunmen trick Scully into coming to Vegas with a Mulder voice synthesizer to help them. Byers sees a man from the poker game meet with Modeski at her hotel room, and Frohike and Langly find that he is named Grant Ellis and works at the same New Mexico defense base where Modeski worked. A rival geek uses a vent to spy on a conference, where he sees Modeski, but is captured by an undercover geek and given an injection that causes him to jump in front of a bus.
Scully arrives, and Byers confronts Modeski about possibly being brainwashed; she denies it and says that Ellis is her fiance and everything's gotten better. Scully finds an injection mark while doing the autopsy, but is then given one herself by the undercover geek. She starts acting a little drunk and flirty (including toward Morris Fletcher). Modeski says Ellis was also helping her stall projects, and they were trying to escape at the conference. Langly is also given an injection. Frohike brings Scully back to the room, and Modeski recognizes that Scully has been injected with a gas she was working on that inhibits brain functions, making someone more susceptible to suggestion.
On the undercover geek's orders, Langly goes into a conference and shoots Modeski three times. Frohike and Byers cart her off, disguised as paramedics, since Modeski has realized that Langly was injected, given him an antidote, and set up the whole scene. Modeski realizes that Ellis has betrayed her to save his own life. The undercover geek kills Ellis and nearly kills Modeski and the Gunmen, but is given the injection by Byers; the Gunmen make him confess to the murders of Ellis and Modeski and give her a new identity. Byers urges her to have a normal life and leave the exposing of government corruption to them; she gives him a ring meant for Ellis and promises to find him again someday.
John Billingsley, who plays Timmy the Geek, also played Dr. Phlox on Star Trek: Enterprise.
Episode Body Count
James "Jimmy the Greek" Belmont: run over after he is given an injection that makes him run in front of a bus.
Grant Ellis: shot and killed by the undercover geek, Timmy.
Cumulative Body Count (137/202 episodes, 1/2 movies)
Humans: 1,548Creatures: 104
Grand Total: 1,714