The world Dower left when he went into hiding was significantly simpler than the new, steam-powered Victorian London, a mad whirl of civilization filled with gadgets and gears in the least expected places. After accepting congratulations for his late father's grandest invention - a walking, steam-powered lighthouse - Dower is enticed by the prospect of financial gain into a web of intrigue with ominously mysterious players who have nefarious plans of which he can only guess. If he can locate and make his father's Vox Universalis work as it was intended, his future, he is promised, is assured. But his efforts are confounded by the strange Vicar Stonebrake, who promises him aid, but is more interested in converting sentient whales to Christianity - and making money - than in helping George. Drugged, arrested, and interrogated by men, women, and the steam-powered Prime Minister, Dower is trapped in a maelstrom of secrets, corruption, and schemes that threaten to drown him in the chaos of this mad new world.