1947年,山(shān )(🐽)东潍(📼)河岸边。武(wǔ )(🔼)工(gōng )队(duì )长马(mǎ )汉东(赵(zhào )滋民 饰)(🎺)在河东阻击战(🐉)中负重(🍖)伤,他(tā )(🗼)令通讯员(yuán )小陈(chén )(孙(👋)羽 饰(shì ))回河西司令(😎)部送信:(🐿)陈(🕔)兴(xìng )(侯健夫(fū )(🗄) 饰(🎡))已投敌(🙍),请上级(🥄)派人到河东整顿队(duì )伍、纯洁组织。小陈(😻)奉命泅回河(hé )西,刚上岸碰上叛徒陈兴,战斗中陈兴被(🚨)小(🛑)陈(⏯)击伤(🖲)。受伤的陈兴带还乡团抓走了小陈的父母(mǔ )及弟(dì )(🤠)弟,严刑拷打(dǎ ),仍(💪)得(⛓)不到小陈的下落,只好释放小陈的父(fù )亲以(yǐ )引(🏯)诱小陈上钩。司令部派姚(🕯)队长(zhǎng )(👣)(张(zhāng )凤翔 饰)和杨副队(duì )长(zhǎng )(刘(liú )振中 饰(🈸))跟小陈(chén )(🌹)去河(hé )东。,但走到河边发(fā )现(xiàn )船已被风吹走,小陈(🐡)只好(🤔)找来父亲帮(⏲)忙,此(cǐ )时(shí )敌人已发觉我方(🥅)渡(🐞)河意图。黎明时(🔎)分,一场战斗(dòu )在(🖍)潍(wéi )河(💣)边打(dǎ )响了......