Crumble Lane School is so dull that the spiders on the ceilings yawn. The school uniform is grey, the classrooms cold and bare and the teachers as dull as dust. The only happy person there is Natalie, who spends all her time doing what she loves best: maths. But then, enter Posh Watson, with his purple jacket, giant sunglasses and pink musical trainers, saying things like "abso-doodle-utely" and "hoo-doodle-ray". And, before you can say "fan-doodle-tastic", everyone is copying him - except Natalie, who thinks that the whole school has gone mad!