AllegiantIn the world of the "Divergent" series, the wall separating the city from everything else was a barrier not to be crossed. Until Tris (Shailene Woodley) came along.

In the new trailer for "Allegiant," Tris, Four (Theo James), and motley crew of misfits ventures beyond the wall to discover the unimaginable. We get glimpses of the futuristic technology that lies out there, but will the people they meet save them — or destroy them?

"Tris, this is not the place we thought it was," Four urgently warns her.

The last book in Veronica Roth's book series will be divided into two films, "Allegiant" and "Ascendant." Jeff Daniels joins the cast of the newest movie as Daniel, a leader of the group that takes in Tris and Four.

"Allegiant" opens in theaters March 18.

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