A talky ending leaves a forgiveable blemish on this semisatirical debut tale of a young foundling learning to harness a real superpower while setting out to uncover his obscure past. Years of poring over a stash of tattered comics left at the door of his New Jersey orphanage at least partially ease Jack’s adjustment when he’s suddenly attacked by a heavily armed warrior robot and then hustled off to the Imagine Nation—a floating island entirely populated by superheroes and reachable only by Those Who Believe. Though the Nation is rapidly turning into a police state thanks to a (pointedly familiar) climate of media-fostered fear in the wake of an attempted invasion by the alien race of robo-zombie Rüstov, Jack does gather enough support both to survive the public revelation that his own bloodstream is crawling with Rüstov nanobots and, thanks to his burgeoning ability to understand and make friends with machines, to steel himself for a second battle with the aforementioned metal warrior. Though Myklusch prefers diatribes and explanations to exploring the ins and outs of this comic-book world, he creates a beguiling, sequel-worthy scenario. (Fantasy. 11-13)