Polly's birthday has been planned in minute detail and everyone who is anyone will be attending.

But the worst happens - Polly gets chicken pox and her birthday party is called off. And to make matters worse, Horace the hamster dies. The extent of Polly's misery knows no bounds and her diary catalogues her despair in hilarious detail.

A witty, lively and fun-filled novel in diary format, brilliantly illustrated throughout by acclaimed Sally Gardner.