An Hubley family enterprise that begins with their children's imaginary performance of a fairy tale about "Princess Polly" and "Prince John" - except that the two girls are way too easily distracted by things in their garden and the realisation - in the real world - that you can't actually marry your sister! Meantime, the animation strives to keep up with their characterisations featuring castles, chivalric knights, damsels in distress and, of course, a great big dragon! Soon tiring of that story, we now find ourselves with a bright giraffe and a kangaroo bouncing all over the place. The…