It has no plot. If I was in a classroom setting, this would be a perfect example for the introduction of prepositions. Simple drawings take us from the front door of a house, though fairy tales, into outer space and eventually back home again. Each page uses a preposition (in front, behind, next to, among) to get us from one place to the next. A classroom book where each student makes a page and it all gets put together would be in short order, but I don't have a classroom... What's a children's librarian to do??
Make each kid make their own book, get as far as they can in an hour and send them home to "finish it" (yeah, right!). I don't have to evaluate their understanding and they were pretty wicked proud of what they accomplished. You know you're running a good program when the get panicky when you announce 10 minutes left.