Amidst the twinkling lights and merry jingles of the holiday season, Moriarty and Sherlock accidentally meet in a bustling store while on the hunt for Christmas presents. As they exchange warm pleasantries, the cheerful ambiance is suddenly interrupted by the distress of the shop workers. With a shared impulse to help, both men leap into action. While Moriarty subtly orchestrates solutions behind the scenes, Sherlock embraces the spirit of the season in an unexpected twist, donning the iconic red suit and becoming the jolly figure of Santa Claus. With infectious joy and festive fervor, they join forces, spreading cheer and turning a perilous situation into a heartwarming tale of holiday camaraderie and shared goodwill. Based on the "Sherlock Holmes" stories by Sir Arthur Conan Doyle and the "Moriarty the Patriot" manga/anime by Ryousuke Takeuchi / Hikaru Miyoshi.