A twisted adaptation of Robinson Crusoe, the story's protagonist, Robert Maitland, a wealthy architect, finds himself stranded in a manmade 'island' (a section of fenced-off wasteland in the middle of a motorway intersection) between the Westway and M4 Motorway in West London, forced to survive on only what is in his crashed Jaguar and what he is able to find. As his condition degrades, it soon becomes difficult to determine whether Maitland is finding sanity or watching his mind fall apart as he finds companions on the island and eventually decides to remain there and forsake his former life.