This is a "heavy" movie.
The plights of the North Korean society and homes depicted here is something you can not believe your eyes, but from many documents such as the reports from those who have escaped from there, we can imagine the movie scenes are close to reality. This is the country of complete oppression. In 1960's we saw North Korea as a poor but hopeful country. In fact, many Koreans living in Japan returned to North Korea to join the building of "paradise on earth". But since then, the country kept going downward. Nowadays they are isolated at the dead end. The reason why such country still survives is that by giving people at the power side extreme privilege, so that they want to keep the regime made of fictions.
In such a country there is a family of the father, once a hero of soccer team, and his loving wife, and their son who likes soccer too. The atmosphere of the family which is poor but tied with love emphasizes how loveless the country is.
In fact, looking at the officials of the camp or boarder security, I could not help wondering if it is possible for the same human being become arrogant and cruel like this. I feel some sense of impotence, because I can do nothing to the situation close to my country.
This movie focuses on the fate of a family. This is beyond a propaganda movie to accuse North Korea, nor to glamorize the rescue group. This portrays the dignity of human being.