Join Arthur, possibly the world's most famous eight-year-old aardvark, his sisters DW and Kate, and their friends Buster, Francine, the Brain, Muffy, Sue Ellen, Fern, Prunella and Binky as they encounter the joys and difficulties that all children experience in their adventures through life. Based on the popular children's books by Marc Brown. Muffy will do anything to have a gigantic bouncy castle at her party, or so she thinks. When her favourite cherry tree is cut down to make room for the castle in her yard, she starts to have regrets. Then, to make matters worse, she learns that cutting down trees hurts the environment, too. What can Muffy do to fix the damage she has done?