About the struggle of the National Liberation Army of Korea against South Korean mercenaries, about the military operations of the People's Army scouts behind enemy lines.

Jung-ae volunteers at a juvenile prison when she graduates from college; but the violent boys threaten her safety. Her boyfriend visits and begs Jung-ae to quit. She considers but feels compelled to continue; until the day when an escapee puts her methods at risk. Will she get to the escaped boy in time? Will his negative attitude convince her to quit, or will she affect him positively? And will there ever be happiness at the prison?

The film tells the story of a small group of the Korean People's Army, led by Hakcheol Lee, deputy chief of the reconnaissance division, which went behind enemy lines.

The plot revolves around a pair of hunters, Moonil Lee and Sun-deok Kim, who wage an armed struggle to defend their homeland during the war on the Korean Peninsula (1950-1953).