The entire class has an occupation chosen for them by the teacher that they have to try out for a few days. The three friends have to work with the PE teacher, while Jerry gets to work with the forest warden in the fire watch tower. The PE teacher is preparing for the orienteering championships and tells the three friends to go out into the forest with a map and a compass to put up the check points. They manage to take the wrong map and get hopelessly lost. The race begins and with no check points put up, all the participants get lost as well. The whole thing ends in a huge search for the lost children. The PE teacher comes out looking like a real hero for his daring helicopter rescue of the three friends.
