After a fun filled spring break, Timmy and his friends, Chester and A.J., are disappointed that they have to return to school, especially since Mr. Crocker invented a way to write F's with their tears. After Remy Buxaplenty visits and tells them about F.U.N. Academy, a school with "no parents, no alarm clocks, fun games and unbelievable food", Timmy wishes for scholarships for him and his friends. Unfortunately, Timmy learns no sooner than his parents drop him off that he has been tricked by Remy yet again, and F.U.N. Academy really stands for "For Unruly N'er-do-wells", a military school for troublemakers. Remy had been sent their by his parents, but is able to coast through his stay due to bribery. Timmy and his friends are not as lucky, especially since Timmy's drill sergeant is Shallowgrave, the former truancy officer that lost his job because of a certain "pink-hatted punk;" Timmy, actually. Timmy and his friends must now find a way out of this place, and Timmy cannot use his fairies to help because of the strict "no pets" policy.