Harold Green is a simple courier, carrying papers for his human boss from Palletts City to New London on his first ride on an airship. But Mika and Captain Belladonna Grayburn are not what he expected from an airship crew, and what of this mysterious gentleman and the explosions he causes aboard ship?

Harold is supposed to be the only passenger, so who is the secretive pair who appear only at night? Entranced by the ghostly woman he calls See, Harold is witness to more than he bargained for and begins to fear for his life on this most singular flight….