The Year Ten notice board at Ashbury High is full of crazy messages. One of them is Mr Botherit's 'Joy of the Envelope' Pen-Pal Project. Best friends Cassie, Em and Lydia are forced to write letters to three unknown boys at downtown Brookfield High - where the kids are all psychopaths, drug-dealers, tattooed bunny-killers, etc. Naturally, this leads to all-out war between the schools, plus secret meetings and some surprising snogging.