To celebrate her 80th birthday, the Queen is holding a children's party in the grounds of Buckingham Palace. She has invited many classic characters from British children's literature. But when the baddies, led by Cruella de Vil, discover that they have not been invited, they steal the Queen's handbag containing her spectacles and the text of her speech; without it, the Queen will not be able to make a speech at the party. Can the goodies find the handbag in time?