Claude and Sir Bobblysock just happen to wander accidentally into the royal palace on a very special day indeed – the Queen’s birthday! Unfortunately the royal nanny, Nanny Stern-Bloomers, has had to take herself off for a lie-down and there’s no one to make sure the royal children stay neat and tidy for the big party. But… Claude and Sir Bobblysock could step in to babysit, couldn’t they? After all, princes and princesses are always on their best behaviour…