At a bachelorette party in a nightclub, the bride tells 2 guys offering blow to go away. They abduct her. The groom's 2 big brothers looked after their kid brother as kids and do so now again as veterans, "looking" for her and the 2

After having escaped the Maze, the Gladers now face a new set of challenges on the open roads of a desolate landscape filled with unimaginable obstacles.