The main part of the documentary is a teacher who can't afford to live anywhere near the school that employs her. I think the cheapest rent was $3,500/month and she made 60K per year (?). I believe she worked in San Francisco but had to move to Oakland. She had to take multiple buses and then walk a few miles from the final stop. But in the end she found a place in San Francisco near her school which she could afford.
It also showed Google and other large companies with their private buses. There was a lot of conflict between average citizens and the "Google buses", at least in the video there was.