In snowy London, the lifeless, brutally beaten body of a man is discovered, with no human traces around it... appearing as if it were simply crushed by the wind. At the dawn of the 20th century, an era of sweeping changes, speed, and science where the prejudices and superstitions of the past would no longer have a place, some seem determined to obstruct its arrival by any means necessary. The man found dead is the first victim in a series of violent attacks aimed at the annihilation of the British mystical elite.

In their attempt to unravel the case, Sherlock Holmes and Dr. Watson hurry to Scotland to meet the only person who can help them. As unknown, dark forces surround them, Holmes's rational beliefs begin to waver. Something incredible and unholy is pursuing them as they strive to assemble a team with the most distinguished occultists in the country.

They are the elites... but will they succeed? As the 19th century comes to an end, the future of the once-dominant city seems grim and more uncertain than ever, as the dark abyss stretches around it threatening to swallow and erase everything.