On their way to a Model UN conference a Springfield Elementary school bus filled with Model UN members crashes onto an uncivilized island and with the children struggling to coexist and find common ground, a Lord of the Flies parody ensues.
Hank and his family go with Kahn and his family to spend a weekend in a duplex condo in Mexico. When Kahn discovers that only the bottom half of the condo has been rented, he breaks into the top half and lets Hank stay there. Dale shows up to stay with the Hills, and when Hank, Kahn and Dale are arrested for breaking into the upstairs condo, they have to sneak back across the border.
Mulder and Scully investigate the strange death of a computer genius. Unknown to them, a super-intelligent virus program is let loose on the Internet and begins to grow and expand by itself.