Grandma has come to stay for the royal visit by Princess Lucy to launch her new badger charity, 'Badges for Badgers'. Which would be fine, if she hadn't knitted Roman the crummiest jumper (AKA 'crumper') on earth that he's forced to wear to school. His whole class is in a fundraising frenzy, led by fame-crazy Rosie Taylor who is convinced that organising a charity fashion show is bound to win her favour with the princess. And in a bid of fierce cruelty she has sponsored Roman to wear his crumper ALL WEEK, even after Gamble tries to flush it down the toilet. When the jumper causes a swan attack and a biker to swerve off the road, can Roman keep his whole life from unravelling?