Story : Pliff and Plops are envious because Plummy has a chemist's experiment set and they don't. They play around with a test tube and a very wild blue-green mass pumps out of it, together with bouncy balls. Of course, Plummy catches on and shoos them away in the form of a huge orange foam. But then they've all had enough of experimenting and get together again with a glass of lemonade!