'Camp is not camp without pranks,' PJ writes in his diary. But when mysterious things start happening to the bands in the camp competition, the Q-Crew begins to wonder if the pranks are going too far. Who is out to sabotage the contest? Elias Greer, the grumpy gardner? Travis, the savvy sound man? PJ, Mo, Izzy, and Jake set out to uncover the out-of-control culprit. Along the way, they learn a few lessons about self-control themselves. Their diary entries unravel one mystery after another until they find Camp Crestwater's final surprise.