The full title for this film is The Defector: Escape from North Korea, and it follows the life of a people smuggler who helps North Koreans escape via the Chinese border. But since North Korean refugees are not recognised by China, these escapees then face the challenge of getting to a third country. 

The Defector was shot undercover, and had a festival screening in New Zealand last month. I can see no news of Australian screenings.

(H/t Sullivan.)