8220的邊框是北美和韓國的代表面對面。精英女中尉權金水景飾朝鮮軍事科學院和其他4個騎兵營是他們最后一天的訓練巡邏。同時，學生從攝影俱樂部迷路的道路上檢查出的景色和輸入基地820。一個未知的射門被解雇組被嚇壞了。權金水景飾和她的團隊看看的射門源...Theborderof820iswheretheNorthandSouthKoreasstandfacetoface.ElitefemalelieutenantKwonJin-kyeongfromtheKoreanMilitaryAcademyand4othercavalrybattalionsareonpatrolontheirlastdayoftraining.Meanwhile,studentsfromthephotographyclubgetlostontheirwaytocheckoutsceneryandenterBAse820.Anunknownshotisfiredandthegroupisterrified.KwonJin-kyeongandherteamlookforthesourceoftheshot......