As the students of Springfield Elementary are being driven to a model UN conference, Otto drives the bus off a bridge after his brake pedal is blocked by a grapefruit. To obtain help, Otto swims off, while the kids are still in the bus. Soon, when the bus is nearly full of water, the kids manage to escape and swim to an island. Once there, the kids find no food, causing Bart to swim back to the sunken bus to get the cooler full of food. Lisa advises everyone to not eat much, as it may be the only food they could have for some time. However, the cooler is found empty the next morning, with the food wrappings discarded around Milhouse, who claims a monster ate it. Lisa champions the charter of the Model UN and insists on giving Milhouse a trial, wherein he is found innocent. The verdict angers the kids, however, inciting violence against Lisa, Milhouse, and Bart, who are forced to flee. The three hide in a cave, but are chased out by a boar, which is soon found out to be the "monster". The kids kill the boar and eat it, and a narration assures that Moe saves the kids. Meanwhile, Homer starts his own internet company, but it is eventually destroyed by Bill Gates.