In 1950, in South Korea, shoe-shiner Jin-tae Lee and his 18-year-old old student brother, Jin-seok Lee, form a poor but happy family with their mother, Jin-tae's fiancé Young-shin Kim, and her young sisters. Jin-tae and his mother are tough workers, who sacrifice themselves to send Jin-seok to the university. When North Korea invades the South, the family escapes to a relative's house in the country, but along their journey, Jin-seok is forced to join the army to fight in the front, and Jin-tae enlists too to protect his young brother. The commander promises Jin-tae that if he gets a medal he would release his brother, and Jin-tae becomes the braver soldier in the company. Along the bloody war between brothers, the relationship of Jin-seok with his older brother deteriorates leading to a dramatic and tragic end. 让主义去死，让感情延续。对谁狠，都不如对自己人更狠。看《太极旗飘扬》的中国人所不知道的一些事。与国旗无关。两个人的战争。兄弟之情和分裂、战争的苦难，韩国人自己的《兄弟连》。一部电影 两个指环。韩国人眼中的战争。城头变化大王旗，与我何干？。导演用力过猛，导致变形。 李镇泰（张东健饰）是生活在汉城的一个修鞋匠，一家人的生计就从修补鞋子的费用维持。虽然物质并不富裕，这却是一个十分温馨完整的家庭。妻子李英顺（李恩珠饰）和母亲开一间面馆，平日还要照顾下面的弟妹，弟弟李镇锡（元彬饰）是家中所有的希望，如今正在高中读书，考上大学是他的梦想，更是哥哥镇泰的寄托所在。 然而随着1950年朝鲜战争突然爆发，平静的生活很快被打乱。战火蔓延汉城，镇泰决定带着家人到大邱去生活，躲避战乱。但在中途，他们却被强行征入军队，押上了开往洛东江前线的列车。从此一家人四分五裂。而在战场上的镇泰只剩下一个愿望：不顾一切用生命保护弟弟，当听说只要获得国家勋章就可以让弟弟免役时，他便疯子般冲在战斗最前沿。然而残酷的战场加上弄人的命运，他们的生命轨迹发生了无可避免的改变。
