The story of a so-called "Lord of Crime," a criminal mastermind responsible for the downfall of numerous wayward nobility, is rife in the United Kingdom. In reality, the Lord of Crime is a gang that includes William James Moriarty and his two brothers, Louis and Albert. They want to demolish all that is wrong with their existing world and build a new, fair society for everyone. They must perform illegal activities in order to achieve their aim, something the famous investigator Sherlock Holmes and his sidekick, John H. Watson, would not tolerate. The Lord of Crime and Sherlock begin a perilous cat and mouse game, each attempting to outsmart the other. Despite his abilities, Sherlock has no notion who his adversary is.