In this series, the "Moriarty" identity is a shared mission between three brothers: William, Albert, and Louis. Their goal is to cleanse the British Empire of its systemic rot.

The narrative thrives on the psychological toll of their "crimes."

: Mirroring Holmes as a "consulting detective," William acts as a private consultant who helps the common folk get revenge on corrupt nobles.

: William believes the rigid hierarchy of 19th-century Britain, which values life based solely on wealth and status, is the true evil.