He can change into animals. All sorts of animals: a flea, a pigeon, even a rhino.Trouble is, he cant decide when - it only happens when he gets worried. And right now, Charlie has quite a lot to worry about:His brother (who is in hospital)His parents (who are panicking about it)And the school bully (who has Charlie in his sights)And even though every kid wants a superhero power, Charlie isnt keen on changing into a chicken in the middle of the school play.