Check Out the Exclusive New Trailer for 'The Maze Runner'

Yahoo Movies is proud to offer the online premiere of the new trailer for the upcoming action-thriller The Maze Runner. Based on the popular YA novel (the first in a trilogy), The Maze Runner tells the story of a teenage boy exiled to the Glade, a community populated by other lads (think: Lord of the Flies) who live in a patch of green space surrounded by a massive and presumably inescapable labyrinth.

In the new trailer, we see young protagonist Thomas (played by Teen Wolf star Dylan O’Brien) as he begins his exploration of the high-walled dangers within the Maze, where he's arrived after being stripped of his memories. We also get a few tantalizing glimpses of some Grievers, the slug-like creatures whose sting bring both immense pain and long-lost memories. We see a few shots of Teresa (Skins' Kaya Scodelario), the Glade's last exile — and its first girl.

To celebrate the big trailer premiere, we're giving away one cast-signed poster to three lucky winners. Simply retweet this post to enter. These terms and conditions apply.

The Maze Runner opens in theaters September 19