主人公洪三(sān )(👷)携(🔨)母亲和好友(🥇)齐林到(🏽)上(shàng )海投奔严华(🕋),卷入两大(dà )公司权利斗争。严(🎹)华此时(shí )是一名码头工(gōng )(🗼)人(rén ),他不(😧)畏强权被(bèi )推举为工(❣)人(rén )领袖。洪三则凭(⚫)借机智(🔸)多次在凶险的(🎡)上(🕖)海滩化(huà )险为夷。洪三与忠义(yì )之(🕌)士沈达义结(jié )金兰,与来上海报父仇的林依依在斗(dòu )智斗(💞)勇中(🚢)成为莫逆,女(🥁)扮(bàn )男装的林依(😞)依(yī )爱上洪(💱)三。洪(🎛)三(sān )接(jiē )近富家(💻)女 于梦竹(zhú ),于梦竹(zhú )爱上洪三。严(🙀)华(🙉)遇(💪)险,为共产(chǎn )党人梁兴义(yì )(🧤)所救(jiù ),加入共产(chǎn )党。林依依为报仇铤而(🚴)走险,洪三与(yǔ )其奔(🤘)走(zǒu )天涯。林依(yī )依遇难(nán ),洪三重回(huí )上海滩(tān )。在严华(⛏)和梁兴义进(jìn )步思想的感(gǎn )召下(🐩),洪三(sān )(🔈)放(🏒)弃(🙎)来之不易的“美好(hǎo )生活”,为(👌)护送梁(🥤)兴义(👵)离(♌)开上(shàng )海倾其所有(🏴)甚至生命。洪三逐渐懂(dǒng )得,共(gòng )产党带领的(de )这条道(dào )路,才是(😳)他所想追求(qiú )的远大前(🛃)程。