Camp 14: Total Control Zone, it's a heartbreaking movie about what life is like in the gulags of North Korea. Shocking to think that sort of thing is still going on just a few miles away from the developed world.
The defector here uses Kakao Talk to contact his NK family every day, and he manages to send them money on a regular basis at only a 15% fee through some Chinese Hawala-like network. Most of the military and party officials like to gamble remotely in Chinese/Myanmar casinos so there is widespread unregistered money transfer networks in place across the country.