Allegiant was released on March 18, 2016, in theaters and IMAX and received generally negative reviews from critics, who criticized the lack of originality, character development, and the decision to split the film into two parts. The film was initially titled The Divergent Series: Allegiant – Part 1, however, in September 2015, Part 1 was renamed Allegiant and Part 2 as Ascendant. Principal photography primarily took place in Atlanta, Georgia, from May 2015 until August that same year. Once outside, however, they discover new truths that will shift their alliances and introduce new threats.

Set in a post-apocalyptic and dystopian Chicago, the story follows Tris Prior, her boyfriend Four, and their small group of friends escaping over the wall that enclosed the city. The film stars Shailene Woodley, Theo James, Jeff Daniels, Miles Teller, Ansel Elgort, Zoë Kravitz, Maggie Q, Ray Stevenson, Bill Skarsgård, Octavia Spencer, and Naomi Watts.

It was set to be the first of two cinematic parts based on the final novel of the Divergent trilogy by Veronica Roth (the second cinematic part was to be named Ascendant). The Divergent Series: Allegiant (simply known as Allegiant) is a 2016 American dystopian science fiction action film directed by Robert Schwentke with a screenplay by Bill Collage, Adam Cooper, and Noah Oppenheim, and the third and final film in The Divergent Series.

Allegiant book series order