In a world drowned in fog and snow, brothers Seth and Quinn dream of inventing the world's first magical flying machine. They enroll at the University of White Chasm, the only school in the world that educates commoners in the special science of ethermancy. There they become the founding members of the White Chasm Aviation Club. But little do they know that dangerous witches lurk in the skies far above the fog. And those witches don't ride brooms. They fly fighter jets.