Blake's world consists of an aging McMansion on the island of Coral Heights. Formerly a luxurious golf-oriented "resort community" in sunny Florida, sea level rise and the breakdown of American society have turned the subdivision into a swampy, isolated isle where a former military general-turned-arms trader has taken control... and the horizon doesn't extend beyond the submerged Interstate's next exit. Blake spends his days clandestinely reading books, watching the boats come and go from the roof of the old Wal-Mart, helping his mentally ill mother farm their backyard garden, and dreaming of a world beyond Coral Heights. When Blake collides with a mysterious woman under pursuit, he makes a split-second decision to help reach to her sailboat and escape his island... and embarks upon the adventure of his life.