This episode introduces us to Polka Dots, a small, stuffed green dog-toy of Blue's with pink polka-dots. We also learn more about Joe's stuffed duck, Boris. We play pretend with Slippery, learning that using our imagination and perhaps our own stuffed friend, we can do anything we want to do. Then, we meet Periwinkle's friend, Mr. Plate and visit new places and situations with the two of them.