The Divergent - Series: Allegiant

: They learn that Chicago is actually a controlled experiment run by a leader named David (Jeff Daniels) to identify "genetically pure" individuals like Tris.

: The new society is divided between those with "pure" genes and those deemed "damaged," sparking new moral dilemmas for the group. Book vs. Movie: A Major Departure The Divergent Series: Allegiant

Fans often point to Allegiant as the moment the films "diverged" too far from the source material. : They learn that Chicago is actually a

: A futuristic headquarters hidden behind a cloaking shield. The Divergent Series: Allegiant