This is definitely not an average summer. The Camp Average crew is split in two. True to his promise, Andre is spending this year at Camp Killington, rival to Camp Average and home to Deets, baseball star and all-around shady guy. Luckily, he has a surprise waiting for him: Mack, who didn't want his best bud to suffer alone. Together, they're going to keep their heads down and blend in... even though someone seems intent on singling them out -- and making them suffer. Meanwhile, at Camp Average, Miles is desperately trying to keep the peace -- which is not easy, due to obnoxious newcomer Garth and his poison-ivy pranks. On top of that, Miles has just one more impossible task on his plate: getting Mack and Andre back on home turf. Things come to a head when Mack and Andre are forced apart, and Cassie challenges Garth to a do-or-die ball hockey showdown in which the winner... gets the boys' cabin?! Game on.