Plotting plenty of tricks for the new school year, Jake Sherman thinks he will rule the eighth grade, until he discovers that he has to relive the first day over and over again, and makes each day zanier than the last.

Through a freak accident, Jake ends up in his gym teacher's body, and now everyone thinks he's all brawn and no brains.

"Actor Erie Lake is very rich and very famous. But he hates his job. Anybody could do it, he says. Even Jake. So Jake and Lake switch bodies."--Page 4 of cover

Jake Sherman and his friends go to Camp Grimley, and find that their back-to-nature counselor is not what he seems.