George has a friend named Allie who wants to learn all about being a monkey; George promised he would stay clean for picture day, but when he helps dye eggs, he falls into a pot of dye and turns completely yellow; Bill and the Man with the Yellow Hat are excited for their big hike, but they get stuck on a ledge and George has to find a way to help; It's love at first sight when Hundley meets Professor Wiseman's kitten, but Hundley's allergic to cats;...