In the closing years of the 20th century the British Empire's rule is still going strong. Queen Victoria is about to celebrate her 160th birthday, kept alive by advanced steam technology. London is a fantastical sprawling metropolis where dirigibles roam the skies, robot bobbies enforce the law and dinosaurs are on display in London zoo. Welcome to Magna Britannia, a steam driven world full of fantastical creations and shady villains. Here dashing dandies and mustachioed villains battle for supremacy while below the city strange things stir in the flooded tunnels of the old London Underground.
When a deadly legacy returns, Ulysses Quicksilver finds himself drawn into that pit of despair known as Bedlam. With a dangerous masked vigalante stalking the streets of London, a monster from Jewish myth on the loose in the East End and rival gangs fighting for control of the city's underworld there may be nothing Ulysses can do to prevent a catastrophic metamorphosis!