In this picture-book companion to Penny & Jelly: The School Show , Penny is invited to a slumber-under-the-stars sleepover But there's one small detail that derails the dynamic kid-dog duo: no pets allowed. Penny and Jelly have to think quick--if the real Jelly can't go, then maybe a pretend Jelly can A paper Jelly? Too rough. A yarn Jelly? Too soft. Jelly after Jelly just doesn't work. But with a little creativity and a lot of heart, Penny figures...