Dr. Huxtable runs a boys' school in the north of England. When the Duke of Holdernesse decides to send his young son there, it's good news for the school. The Duke is a very important figure, and Dr. Huxtable is delighted to have his son among the pupils. However, two weeks later, Dr. Huxtable is the unluckiest man in all of England. Why is that? And why does he take the train to London to go to Baker Street? Why does he need the help of the famous detective Sherlock Holmes? It's because someone has kidnapped the Duke's son.