The Divergent Series: Allegiant is the first of two cinematic parts and is successful.
The Divergent Series: Allegiant . It is the first of two cinematic parts based on the novel Allegiant , the final book in the Divergent trilogy by Veronica Roth , and the third installment in The Divergent Series . Allegiant was released on March 18 , 2016 , in theaters and IMAX and received mainly negative reviews .