The level of the world's oceans has risen, and the streets have turned into canals. Every skyscraper has become an island. But for the inhabitants of Madison Square, New York in 2140 is not a dead city at all. A market trader who knows how to find new opportunities where others find only trouble. A policeman whose job is never done. Together with lawyers, of course. An Internet star whose hot air balloon adventures are followed by millions of viewers, and a house manager who has earned respect for his attention to detail. Two boys who don’t belong here, but they have no other home. And these two will be more important to the future than anyone can imagine.