After the earth-shattering revelations of "Insurgent," Tris must escape with Four and go beyond the wall enclosing Chicago, leaving for the first time ever the only city and family they have ever known. Once outside, the revelation of shocking new truths quickly render old discoveries meaningless, and Tris and four must quickly decide who they can trust as a ruthless battle ignites beyond the walls of Chicago which threatens all of humanity. To survive, Tris is forced to make impossible choices about courage, allegiance, sacrifice, and love.—mapbryan