After encountering administrative errors that will require him to begin his vacation one day earlier than expected,
Principal Skinner abruptly changes the final day of the school semester to be a "
go to work with your parents day" so he can close the school early.
Lisa goes to the nuclear power plant with
Homer, while
Bart, after finding out he is not allowed to just stay at home and watch
Marge do housework, instead goes with
Patty and Selma to the
Department of Motor Vehicles. Bart makes himself a
fake driver's license while at the DMV, and later uses it to rent a car and arrange a road trip with
Nelson,
Milhouse and
Martin, paid for with $600 that Martin's father helped him earn on the
futures market. The boys soon hit the road after each giving their parents an alibi concocted by Bart. At first, they travel aimlessly for a while and frivolously spend Martin's money at multiple stops, before deciding to travel to the
World's Fair in
Knoxville, Tennessee. Only after arriving at
World's Fair Park do they discover that the Fair was held in 1982, and they spend the last of Martin's money on mediocre souvenirs. A frustrated Nelson throws a rock at the
Sunsphere and causes it to topple, crushing the boys' car and leaving then stranded in Knoxville. Bart places a
collect call to Lisa, who has so far spent her entire
spring break at the power plant with Homer, and asks her to help him return home while concealing the ordeal from their parents. On her advice, Bart becomes a
courier, but none of his assignments take him anywhere close to Springfield. Lisa tells Homer of Bart's predicament after making him promise he will not get angry. Homer deliberately destroys his
workstation so that he can order a replacement unit from the
Oak Ridge National Laboratory and have it shipped via nearby Knoxville, with Bart as the courier and the other boys
stowing away inside the shipment crate. With Bart safely back in Springfield, Lisa and Homer quietly fume at him at the dinner table. However, Marge remains clueless about Bart's misadventures, despite later receiving multiple confusing phone calls from Principal Skinner (who saw Bart during a delivery run in
Hong Kong), the
Tennessee State Police, and the courier service that employed Bart. ==Production==