A new era of alchemy is about to dawn… The empire of Grand Central, built on its foundation of sand, has crumbled. But in Europe, Belle Epoque believes it has the key to a bright new golden age. A new formula for the philosopher’s stone, so strong it stretches the limits of the impossible. They plan to unveil the drug at a global Exhibition, where they will unleash wonders the world has never seen―and rain destruction upon their enemies. It’s a plan that’s missing only one thing: the Ghost who brought down Grand Central. Set adrift by her own victory, Sam takes Belle Epoque’s offer, but all she wants is to turn their plans against them. Set free of the syndicates for the first time in years, Ari follows her back into their grasp. All he has ever wanted is for those he loves to be safe. But forces greater than them both are on the move, bringing new enemies–and old–into their orbit. Sam and Ari have never had the luxury of being on the same side. Now, it might be too late to reclaim the innocence of the children they once were, but perhaps they can still find their way back to each other… unless this deadly new age forces them to pay for their ambitions with their lives.