In preparation for a stint by guest host Jon Stewart, Larry and Arthur go over a list of potential guests. Suspecting that the network may be grooming Stewart as his replacement, Larry is reluctant to give him anyone that would allow him to shine, especially X Files star David Duchovny. However, an invitation to join him at his beach house for a weekend seems to suggest that Duchovny is romantically interested in Larry. Meanwhile Hank discovers that the used sports car he just bought from singer Elvis Costello is a lemon.
When Stewart complains about the guests he's being given, the network executives step in. Claiming they want to get Stewart once his current contract expires, Dennis and Melanie tell Arthur of a plan to use him as Larry's permanent back-up host and possible replacement. Meanwhile, after receiving a gift from David, Larry polls his staff on whether they think the actor is gay. Then, after noticing that Jon has managed to get some of his favorite guests back, including David, Larry rearranges the schedule to keep the best talent to himself. And Jon gets more bad news when he learns that Hank's faulty car has caused his own to catch fire.
After Hank confronts Elvis about the wreck he bought, Larry gets a surprise visit from David. Asked if he's gay, Duchovny says no, though he does admit to having feelings for Larry that can't be easily explained. Finally, after learning that David has also invited a girlfriend for the weekend, Larry is stunned to find that Duchovny's agent convinced the network to move him back to Stewart's stint on the show.