Thomas is sent to the maze. He is very confused and frightened because he doesn't know where he is. He is then told that they are stuck inside of a maze and cannot escape.
A girl is sent to the maze, Teresa. She is the first girl to be sent to the maze. A note is also sent up with here which stated that she was the last one. Everything started to change once she arrived.
Thomas kills a griever and finds a device in the stomach of the griever. Thomas believes this a a way to get out of the maze.
Thomas and the others who were in the maze figure out a plan to escape. They then run through the maze fighting grievers along the way.
Thomas and the others make it out of the maze. Where they then find the reason why they were in the maze and what has happened to the world.
A rescue team comes and saves Thomas and the others by helicopter and takes them to safety.