Pixar has been no stranger to major, last-minute changes on its films—especially when it comes to swapping out the director—but changes for the studio’s upcoming The Good Dinosaur has had quite possibly the farthest reaching effect. Up co-director Bob Peterson was poised to make his directorial debut with the film, but he was removed from the project nine months before release. The film was subsequently pushed back from 2014 to November 25, 2015, leaving Pixar without a 2014 release and straining the studio financially, resulting in layoffs and a shift of the Finding Nemo sequel Finding Dory to 2016.
The studio confirmed last month that Peterson’s co-director Peter Sohn has now taken over as the director of the film, and details have surfaced regarding how Sohn overhauled the story and why Peterson was fired in the first place. Read on after the jump.