根据韩战期(👷)间(🔨)真实战(zhàn )事改编。1950年(nián )(🌰)6月25日，北韩挥军越过三八线突(🆖)袭南(🐉)韩(hán )，三(🍖)日攻陷(xiàn )汉城（今首尔(ěr )），战线不断南(🌗)进。在(📼)美(měi )军(🚤)及联合国军(jun1 )支援下，南(nán )韩军逆势反击。美(měi )军指挥官(🏐)麦(🚥)克(kè )亚(yà )瑟提出代(dài )(🎫)号为「铁铬(✖)行动(dòng )」的仁川(chuān )登陆计划，该(gāi )计划(huá )(💞)急(⏺)需(xū )一(yī )支(📎)大队(duì )的兵力从侧翼阻击(jī )扰敌、声(shēng )东击西(🎛)，通过长沙里切断北韩(hán )军的补(🙌)给线。 由于任务本身极其(qí )艰钜(🍄)，加上南韩国军当时兵(⛳)力薄弱，无法(🤳)抽(chōu )调足够(🐀)正规军支援，军方不得(🤘)不把这项任务交付给772名(míng )(🐾)学生兵执(➡)行，这些学(xué )(🐨)生兵平均年龄只有17岁(🐩)，仅(jǐn )仅(jǐn )接受了两(liǎng )星期的军事(🔍)训练，在毫无实战经验的(de )情(qíng )况下投(tóu )身战(🏃)场。行军路上固然杀(shā )机重重，战友(🔥)内部(🌸)也诸多衝突，年少(shǎo )气盛(😳)，迸(🎦)发(📤)出(chū )各种角力。 仁(rén )川登(dēng )陆(lù )战(zhàn )前(📬)夕，长(zhǎng )沙里登陆任(rèn )务如期执(zhí )行，这群徒(tú )有(yǒu )一腔热(rè )血但战(💕)力(🈂)薄弱(🐌)的学生们，无可避免地接受(🙅)命运中(🍾)最(🕵)残酷(kù )的(📯)考验：穿越炮火与(yǔ )海浪，浴(yù )血长(🏖)滩(tān )(🍝)，馀下部队(👔)身(😼)陷敌军重重(🦐)围剿，直(zhí )(♈)至弹尽粮绝，挣(😂)扎于阵亡与(🕤)倖存(🥈)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 mander 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?