Thomas and his friends have never imagined anything more formidable than the challenges encountered in the maze.But they were wrong.Their defective memory makes them unknown what has been happening in the outside world.Things are even more terrible than the sorrowful hedgehogs, more skillful than the nooks and crannies of the maze and more cruelly than the change.What is the true role of the Thomas group in this whole thing?What if they know that there are other maze other than where they have just escaped?