Magpie Madness

Sam and her friend Diana are attacked by a magpie and since the local postie refuses to deliver mail something has to be done. The next day a new girl called Bianca joins their class and is so rude to Diana, because Diana has cerebral palsy. Sam is furious but when the girls learn that Bianca is staying with her aunt because her mother is too ill they do become friends. When Bianca tries to cure the magpie problem and falls off her bike she has concussion, there has to be a better way forward, but what?