This is a totally awesome book. My children read it at school and they really loved it. And of course we bought the book and we saw the movie. 
 And then we read the book again again and again :-) 
 It is a clever story about a little mouse and a scary (not really) monster, the Gruffalo. The intelligent sourceful little mouse manipulated the bigger animals who wanted to eat him. He made them think that he is scarier than Gruffalo. Thus, he should not be eaten. 
 The little mouse though that Gruffalo is a made up monster, but he was wrong. Surprise!