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简介：Theborderof820iswheretheNorthandSouthKoreasstandfacetoface.ElitefemalelieutenantKwonJin-kyeongfromtheKoreanMilitaryAcademyand4othercavalrybattalionsareonpatrolontheirlastdayoftraining.Meanwhile,studentsfromthephotographyclubgetlostontheirwaytocheckoutsceneryandenterBAse820.Anunknownshotisfiredandthegroupisterrified.KwonJin-kyeongandherteamlookforthesourceoftheshot...…