Yodok Stories (2008)
A masterpiece of a documentary on North Korea. Here you can watch it for free.


http://www.snagfilms.com/films/title/yodok_stories


From wikipedia.org

A small group of people have managed to flee the camps and start a new life in the prosperous South Korea. The film follows some of these refugees who despite fear of persecution and death threats produce an extraordinary musical about their experiences in the Yodok concentration camp.