Gary is really pleased that his mum and dad are back together again, but how on earth could they seriously be considering having another baby? It really was Gary's worst nightmare! A baby sister! A baby of any kind would be bad enough - no more going with his dad is see their favourite football team play, no money for new trainers or clothes - the end of everything, just no more fun!
With the help of his best mate, Robert, Gary is determined to make his parents realise that having another baby would be a big mistake! So they start by writing a list of ten things on: "Why I don't want a Baby - surely that should put his parents off having another baby, ever!