After his parents and family die, Seven escapes his factory job. By wits and will alone, he survives in a London divided into the affluent Fairside and the squalor of London's industrial Blackside, where many struggle to eke their existence out of despair. But Seven has to fight for more than just food and shelter.

All over Blackside, a secret cabal of prominent citizens and the mysterious Mr. Kettlebent are snatching children. Rumor has it a wizard is controlling the queen, and the country's most notorious villain is the only one who wants to stop him. Seven is determined to find out why.

Hired by the criminal Jack Midnight to steal the evil wizard's spellbook, Seven soon discovers the mystery runs deeper than he suspected. But events spiral out of control, and it isn't long before the intrigue sweeps Seven into its deadly current.