Helen and Mac, two of Mrs. Hudson's old friends, have their home broken into. A new engine was stolen from them, with which they wanted to compete in the big air show. At the crime scene, Sherlock Hound finds a piece of Professor Moriarty's cloak. To stop the professor, he and Doctor Watson decide to enter the competition as well.
Helen and Mac, two of Mrs. Hudson's old friends, have their home broken into. A new engine was stolen from them, with which they wanted to compete in the big air show. At the crime scene, Sherlock Hound finds a piece of Professor Moriarty's cloak. To stop the professor, he and Doctor Watson decide to enter the competition as well.