Bart & Milhouse find a twenty dollar bill, and buy a Squishee made entirely out of syrup. After a wild night, Bart wakes up to find that he joined the Junior Campers. At first he hates it, until he finds out he can get out of school to go to meetings, and learn how to trap wild animals.
Homer, on the other hand, thinks Bart is a complete square. But he still agrees to go on the river rafting trip with him. On the trip, however, he takes a wrong turn and he, Bart, Ned Flanders and Todd are lost out at sea. After several days, Homer has eaten most of the food rations.
Believing that they might not make it, he gives Bart his Junior Camper pocket knife. However, he drops it and punctures the raft. As the raft sinks, Homer smells hamburgers and realizes that there is a nearby oil rig with a Krusty Burger on it. Homer follows the smell and they are saved.