A teenage boy named Thomas wakes up and doesn't remember anything but his name. Thomas finds himself surrounded by other teenage boys, Their leader Alby welcomes him to Glade.
Over a course of a couple weeks, Thomas learns that behind the gray stone walls there is a maze full of grievers. But during the day, Thomas realizes that There are a group of men that go and run through the maze during day time, they were called the "Runners". These boys would try and navigate there way through the maze to find an exit.
On the same day every month there is a new boy sent to the Glade. But this time there was a girl who was still in a coma.
The Next day Alby and Minho, a Runner go to investigate a dead griever. A few minutes before the door closes, Thomas see's Minho dragging a uncouncous Alby towards the door. The door closes right behind Thomas. Minho tells Thomas that Alby was stung by a griever and Minho was very scared for Alby's well being.
In the morning, Newt Alby's second hand man, screams at Thomas for risking his life to save anothers. Telling him to just stay behind and stop trying to help.