At the start of the video they briefly discuss what parkour is, how it got started, and other common things. Martin Svenselius of Parkour Academy Stockholm did a wonderful job of explaining things. The documentary also includes some insight into the minds of those who are running organizations that teach parkour. Martin explains that he would much rather be able to do what he does without money involved, but that it just isn't possible now.
Chris Rowat of Parkour Generations also makes an appearance in the film, discussing many issues including getting paid for instructing parkour, competitions in parkour and sponsorships. If you want to know how I feel about those subjects, watch the film and listen to Chris' words. I wholeheartedly agree with everything that he had to say!