Benjamin Franklin needs a pair of unlikely geniuses to build an impossible weapon powered by a mysterious substance that defies natural philosophy.
Thirteen-year-old Adam Watt is half-Lenape and wholly unwanted. He's only kept alive by his fierce older sister, Jemma, who holds their broken family together with grease-stained hands and sheer determination.
Then Adam discovers he can see the hidden machinery of nature. A gift from the mother who died saving him.
Now the siblings are building the first flying warship, mythically powered and lobbing blue fire that can swallow cities.
It could win the Revolution. Or end it almost before it's begun.
Because the substance doesn't simply levitate the aeroship. It corrupts everyone who touches it. And when a charming enemy offers Jemma the one thing she craves, the line between patriot and traitor begins to blur.
The sky is the Revolution's new battlefield. The only question is who they'll be when they come back down.
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