During the height of World War II, the famous British detective faces one of his most challenging cases. When Professor Moriarty, his arch-nemesis, becomes involved in a plot to steal a revolutionary device that could change the course of the conflict, Holmes knows he must act quickly. This invention, designed by the brilliant and somewhat eccentric inventor working for the British government, is key to disabling the advanced German war machines.
Holmes, along with his loyal companion Dr. Watson, delves into a world of espionage and betrayal as he follows the trail of Moriarty and his gang of criminals. His investigation leads him on a race against time, traversing both the cold streets of London and other challenging locales, where intelligence and cunning are his only weapons. However, the situation complicates when the Allies find themselves caught in a game of cat and mouse, with Moriarty always one step ahead.
What Holmes does not realize is that the moment of reckoning is approaching. As the mystery unfolds and the pieces of the puzzle come together, an even deeper and more dangerous conspiracy is revealed. With the fate of the war hanging by a thread, Holmes' brilliant ingenuity is put to the test like never before, and the battle between good and evil intensifies in the struggle to protect not just an invention, but freedom itself.