In Chicago in 1871, Kasimir Merriweather is a man who seems to have it all: youth, good looks, and staggering wealth. But Kasimir has a secret. He walks in his sleep. And he talks to ghosts. Lately, his ghosts have been hinting at a catastrophe about to befall the city that will threaten all that he holds dear. One night, during one of these waking dreams, Kasimir sees something that may or may not be real: a fiery explosion over Lake Michigan, followed by a man gliding to earth on a giant mechanical wing. The trouble is, no one really believes it, not even his closest friend. Can he prove the truth of his visions before it's too late? Or is he simply losing his mind?