Sassy and Lum, two bear cubs, can't wait to spy on the first campers of the year, even though Mother Bear warned them against it. They find two grownups and a small boy that are perfect for their adventure. When the campers are off for the day, the bear cubs wreak havoc on the campers' tent and sleeping bags! The grownups aren't paying attention at all, but the boy is certain that the bears are guilty. Can he prove it to the grownups?