A scientist builds a time machine and accidentally sends his apartment complex manager and a petty burglar to 16th century Moscow, while Tsar Ivan the Terrible travels to 1973.
Mycroft Holmes hands Sherlock Holmes the case of the Master Blackmailer.
After upsetting the criminal underground in 'the Master Blackmailer' case, Sherlock Holmes has to face his archenemy: Prof. Moriarty.