The novel consists of six nested stories that take the reader from the remote South Pacific in the nineteenth century to a distant, post apocalyptic future. Each tale is revealed to be a story that is read (or observed) by the main character in the next. All stories but the last are interrupted at some moment, and after the sixth story concludes at the center of the book, the novel “goes back” in time, “closing” each story as the book progresses in terms of pages but regresses in terms of the historical period in which the action takes place. Eventually, readers end where they started, with Adam Ewing in the Pacific Ocean, circa 1850. – wikipedia.