Peanut, Butter and Crackers are off to the great outdoors in a camper van. But when indoor cat Butter discovers that their human forgot to pack a litter tray, he's sure there must be one in the forest - how else do cats go to the toilet?! Together with puppy Peanut, he sets out to find one - only to get lost. And things go from bad to worse when Butter and Peanut fall into a river! Can Crackers pull off a river rescue and help his two friends get back home?