The Divergent Series: Allegiant is part of a feature film series.
Ansel Elgort . As a film actor , he played Tommy Ross in Carrie ( 2013 ) , Caleb Prior in The Divergent Series ( 2014 ) and Augustus Waters in The Fault in Our Stars ( 2014 ) . The Divergent Series: Allegiant . The film stars Shailene Woodley , Theo James , Jeff Daniels , Miles Teller , Ansel Elgort , Zoë Kravitz , Maggie Q , Ray Stevenson , Bill Skarsgard , Octavia Spencer and Naomi Watts , and is the sequel to Insurgent and could be followed by the concluding entry , Ascendant ( Allegiant and Ascendant were originally to be titled Allegiant -- Part 1 and Allegiant -- Part 2 ) .