Sesame Tree - Series 2 - The Big Sleepover

Series about Potto and Hilda, who live in their magical tree with the Bookworms and the Weatherberries. They are joined by their friends Claribelle and Archie. Potto and Hilda want to have Archie over for a sleepover, but Archie's afraid of the dark. Will he miss the sleepover, or will his friends find a way to help him?