Due to their size, Wolfie and Ru are often feared by other kittens their age. The two brothers, like all children, are discovering the world around them when they come across a balloon just as big as they are. After a day of fun, they realize the big mess they have created with their balloon. Including almost breaking a lamp over 100 years old! In the end, what they discover is that it is not a good idea to play with things that bounce while in the house.