Sherlock Hound: The Adventure of the Blue Carbuncle/ Treasure Under the Sea

"The Blue Carbuncle"
A mysterious bright red bird appears in the sky above London, flying around and making strange noises. While chaos erupts among the citizens, Moriarty successfully steals the "Blue Carbuncle" from a jewelry store. However, the "Blue Carbuncle" in his pocket is pickpocketed by Polly, a girl pretending to be a boy, who had her own circumstances. In an unexpected turn of events, Polly meets Holmes and his friends. They will now have to protect Polly and the Blue Carbuncle from Moriarty.

"Treasure Under the Sea"
Holmes and Watson are summoned by the commander of the navy when the news that "Adventurer Captain Lythander has Discovered Napoleon's Treasure Under the Sea" is spreading like wildfire throughout London. It seems that a submarine being constructed secretly was stolen. Just as Holmes discloses the hideout of the culprit, Professor Moriarty, to the commander, the indignant commander sets out on a warship while taking Watson, who is displeased with him, and a reluctant Holmes on board in pursuit of the submarine stolen by Moriarty.