The movie is establish on a true narrative of a grouping of 71 undertrained and undergunned student-soldiers for South Korean Peninsula during the Korean War, who be largely kill on Aug 11, 1950, during the conflict of P’ ohang-dong, while defend P’ ohang-dong girl’ in-between school, a strategical point for safeguard the Nakdong River, from an onslaught by overwhelm North Korean force for 11 hours.