I cried throughout the movie because many of the scenes were similar to the experience I had.
In a cold lunar New Year's Day in China in 2000, my little brother left our underground hut to beg food in a Chinese village. He returned with tears in his eyes but no food in his hands. If you experience things like that, you get to hate people and want to take revenge, like Sin in the movie.
We risked our lives for a South Korean dream. But many of us feel like boat people even if we are in the South. I sometimes ask myself a dangerous question. If a war breaks out, should I fight South Koreans or should I shoot at my relatives in the North?