根据(👷)韩(hán )战期(qī )间真实战(zhàn )事改编(biān )(🐌)。1950年(nián )6月25日(🕰)，北韩(🍥)挥军越过(guò )三八线突(🛤)袭南韩，三(sān )日攻(gōng )陷汉城（今首尔），战(zhàn )线(xiàn )不(🏇)断南(nán )进。在美军(jun1 )及联(🔸)合国军支援下，南(nán )韩(👁)军逆(💆)势(✳)反击。美军(🏐)指挥(huī )官(🕌)麦克(📞)亚(yà )瑟(sè )(🎫)提出代号为「铁铬(🚸)行动」的(🥀)仁川登陆计划(huá )，该计划急需一支大队的兵力(lì )从(cóng )侧(cè )翼(yì )阻击扰(💱)敌、声东击西，通过长(🙂)沙里切断(duàn )北韩(🙌)军的补给线(㊙)。 由(yóu )于任务(🎾)本身极(jí )其艰钜，加上(shàng )南韩国军当时兵(bīng )(👺)力(lì )薄(báo )弱，无法抽调足(zú )(🚴)够正规军支援，军(🤘)方(🈁)不得(dé )不把这(zhè )项任务交付给772名(🈸)学生兵执(zhí )行，这些(xiē )学(🤷)生兵平均(🌼)年龄只有17岁，仅仅接(jiē )(🎥)受了两(🤔)星期的(de )(😙)军事训(📛)练，在毫无实战经(♌)验的(🥅)情况下投(🔞)身战场。行军路上固(🐖)然(rán )杀机(🔫)重重，战(🌸)友(yǒu )内部也(🚽)诸(zhū )多衝突，年少(shǎo )气(🎦)盛，迸(🍺)发出各(gè )种角(jiǎo )力。 仁川(chuān )登陆战前夕(xī )，长(zhǎng )沙里登陆任务如(rú )期执(🧥)行，这群徒(🔬)有(🍯)一腔热(rè )血但战力薄弱的(de )学生们，无可(kě )(💨)避免(miǎn )地(dì )(🛃)接受(🍾)命运中(🚓)最残(cán )酷的考(kǎo )验(🏗)：穿越炮火与海浪(⛎)，浴血(🐸)长滩，馀下部队身陷(🔝)敌军重(chóng )重围剿，直至弹尽粮绝，挣扎于阵亡与倖存(cún )的分界线上… Based on the incredible true story of Jangsari Landing Operation. When North Korea invades South Korea on June 25, 1950, they pushed South Korea and its ally US Army to the southernmost city. U.S. General MacArthur planned Operation Chromite, which would see the joint allied forces to take back a strategic location of Inchon and in order for it to succeed, he needed a small battalion to flank the North Korean army and eliminate their supply line at Jangsari beach. Having lost his family on his retreat away from North Korea before the War, a model student Choi Sung-pil enlists in the army to fight for the South. Ki Ha-ryun is a rebellious youth from the South who volunteers to fight in the war. All of the 772 students and youths are like them who are barely out of school with only 2 weeks of boot camp training. Task force commander Captain Lee Myung-jun knows that it’s a long shot, but he has no choice but to lead them into a crucial mission. Meanwhile, US war correspondent Maggie braves the dangers of the battlefield to report on the war in the frontlines. She feels empathy for the Korean students who must go into battle on behalf of the veteran soldiers for their country, and tries to do what she can on her end to rescue them. With little ammo, scant food supplies and raggedy weapons, can the students successfully carry out their mission and return home safely?