The whole camp is down because Michael isn't coming back from the chicken pox and instead is going with his parent's to Europe. A new camper named Pinsky comes in to take Michael's spot. Pinsky is sports-oriented and out-going and quickly gets on Bobby Budnick's nerves. Ug thinks that other campers might get the chicken pox and quarantines the camp. Pinsky bribes Ug with the famous Pinsky salami but can he get the cabin completely out of quarantine without the help of Bobby Budnick?
It's backwards and upside-down weekend at camp and everything that can be done backwards- will be done backwards. Anyway Counselor Ug changes places with Camper Bobby Budnick for the weekend and Budnick makes a bet with Ug that he can be a better Counselor than Ug ever was. The bet is made but with the help of Ug the campers start to play tricks on Counselor Budnick. Budnick follows the camp guidelines and punishes the campers who in turn begin to really hate him. Budnick finds it harder to be a Counselor than he ever thought and needs to turn the whole thing around ...