You can read the synopsis for Maze Runner: The Death Cure here:
In the epic finale to the Maze Runner saga, Thomas leads his group of escaped Gladers on their final and most dangerous mission yet. To save their friends, they must break into the legendary Last City, a WCKD-controlled labyrinth that may turn out to be the deadliest maze of all. Anyone who makes it out alive will get answers to the questions the Gladers have been asking since they first arrived in the maze.
Maze Runner: The Death Cure is in cinemas from 9 February 2018. Get all the latest sci-fi news with every issue of SciFiNow.