Criminal genius Moriarty has his web spread throughout London and has decided to aim for even more. He has conceived a much more grandiose plan: get rid of members of the royal family and take over the throne to spread criminal influence all over the kingdom.
The best detective of all time is the only one who can contest him, but his capabilities are not unlimited. While Sherlock himself leads an unequal battle with the underworld king, you, his disciples, must finish what he started - disclose all the details of the criminal plan and stop the villain.