Chapter One - Group D.

Just when she thought the trials were over, that she and her friends were safe, Riley and the other Glades are plunged into terrible danger and faced with another impossible challenge.

This time, the Gladers have to face the Scorch - they must cross a burnt waste land, danger at every turn, in order to reach the Safe Haven and safe mankind. This time, they are accompanied by two more people - Aris, a boy from a parallel maze, also known as Group B, and Axel, a figure from Riley's past.

Riley will face love, loss and heartache beyond measure. But can she conquer her fears and reach safety?