"The Maze Runner: The Scorch Trials" will be hitting the big screens on September 18, and fans will finally know what happened to the small group who were able to leave "The Glade" through the maze.

Writers Jason Lanzing and Colin Kelly spoke with MTV News and discussed about the type of approach that they took in tackling James Dashner's dystopian novels.

“When we first came into the project, James Dashner and the team over at Fox had already put together a loose idea of what stories they wanted told: the tale of Jorge and Brenda; an exploration of the second maze; a history of how the world fell and WCKD rose,” Kelly said. “That was basically it – starter sentences.”

Although Dashner was pretty much hands-on with the approval process, Kelly and Lanzing were given “tons of freedom to innovate on the story and the way it was told.”

“The last thing we wanted was to write stories that people expected,” he added. “Hopefully, even the most fervent fan of the franchise will find things in this book that surprise.”

Meanwhile, director Wes Ball told Empire Online that fans should not expect that the plot of the story will be based solely on the second book. “We approached it more as using the same ingredients, but usingly a slightly different recipe. So, things from the first book end up in the second movie. There are things in the second book we are saving for the third movie.”

But what else can the franchise's followers expect from the movie?

Dylan O’Brien, the lead star of “Maze Runner: The Scorch Trials,” has the scoop. He told MTV News, “It is running everywhere. It is running away from things – up sand dunes.”

These sand dunes were not regular ones. They were poured all over the mall premises where the cast was shooting scenes for the movie, and it was a huge challenge for the film’s cast members since apparently, the sand acted like a quicksand that constantly made them “sink lower and lower into it.”

“The sand just makes you stand still,” Kaya Scodelario, who plays Teresa, said. “Your legs just move, but your body does not. I am the worst. I am the laziest, by far. I do not like exercising at all. They, kind of, push me to do it. I look at Dylan and Ki-Hong Lee and think, ‘If they can do it, I can do it, too.’”

The film makers may have prepared some things that fans will least expect, but since Dashner was personally involved in the film as well, fans don't have to worry since the movie’s storyline had the author’s seal of approval.