'The Divergent Series: Allegiant' release date, spoilers, news: First sneak peak clip released; fourth movie called 'Ascendant'

The adventures of Tris and Four continue as they journey into a new world. In "The Divergent Series:Allegiant," the first part of the last installment in the "The Divergent" trilogy, fans will see an action packed rollercoaster ride.

The Divergent Series YouTube channel released a short clip that will be found in the movie. Titled "Heights." the clip features the two main characters, Tris (Shailene Woodley, Golden Globe nominee) and Four (Theo James), as they climb an old building and watch the sunset, suggesting this happens before the embard on their new adventure. 

Previously called "Allegiant Part 1," this new film will show Tris and Four as they escape from the walls of dystopian Chicago. They stumble upon a different world they didn't even know existed. Surprised by the welcoming committee, they find out that what they know about their situation is not even half of the real truth.

The people in this other world seem to have been watching them all along. As they uncover new truths from their new world, the more they find out that the system isn't really to be trusted. They need to decide whose side they really are on. 

Adapted from the book of New York Times best-selling author Veronica Roth, "Allegiant" is directed by Robert Schwentke ("Insurgent") with screenwriters Noah Oppenheim, Adam Copper, Stephen Chbosky and Bill Collage.

Meanwhile, "Ascendant," the fourth movie that used to be called "Allegiant Part 2," is set to hit the big screens on March 2017. With all the buzz from her book fans about why the title was changed, Roth posted a statement.

"What does this mean? Well, basically, it means there are going to be some changes, but it's really too early to know exactly what those changes will be or the extent of them," she said in her blog. "I know changes always make fans of the books– and the author!– nervous, but hopefully the characters we know (and love. Or sometimes love to hate?) will still be intact, which is really the important thing."

"The Divergent Series: Allegiant" will be shown in theaters on March 18.