The Maze runner

What if the gladers never escaped? What if the walls never stayed open? What is Theresa wasn't the last one? With more gladers arriving even stranger than the last, and a mole trying to tear the gladers apart from the inside out, how is it going to turn out for the gladers and their new found friends, and enemy's.

(I needed help so this Description was written by @EddoTheCornerKing)