In 2007, the director met the '4.25 soccer team' from North Korea that made a training trip in China. He found a prominent boy among the players of various ages in the team: Lee Sung Jin. Then, the encounters with him alternated between awkwardness and pleasure according the political situations of North and South Korea such as the attack on Cheonan ship and the Battle of Yeonpyeong. What do North Koreans mean to us?