Holmes is just days away from bringing down the biggest criminal ringleader in London. But his quick and wicked foe is as cautious and intelligent as he. When Moriarty learns of Holmes' plans against him he releases an evil on England the likes of which no civilised man had ever seen. In a desperate attempt to save England and perhaps the known world, Holmes and his trusty friend Watson travel across Europe to find the source of Moriarty's new found power and end him and his wicked plan for good. With the aid of every friend and ally they can find, the two detectives make regular and efficient usage of their shared experience of boxing, fencing and firearms in a bloodthirsty adventure.