After a visit by Mr. (Ronald Temple) to the house (Sherlock Holmes) and Doctor (Wson), he assigns them to search for his kidnapped child. The kidnapper did not contact the ransom request, but at the same time there is a great danger that threatens the Victorian society from his father's ball. It turns out that it was not an ordinary kidnapping at all, and soon our heroes will be at stake. What is the real boy's inheritance? And his relationship with the murders that occurred in (White Chapl) a decade ago.