主人(rén )公洪三(⛲)携母亲(🥇)和好(📒)友齐(qí )林(lín )到(dào )上海投奔严华(🕸),卷入(🕰)两大公司权利斗(dòu )争。严(yán )华此(cǐ )时是一(yī )名(🗼)码(mǎ )头工人,他不(bú )畏强权被推举(jǔ )(🌗)为(🏇)工人领(lǐng )袖。洪三则凭借机智(🤷)多(duō )次(🛍)在(zài )凶险的(de )上海(💆)滩化险为夷(yí )(🚉)。洪三(🐖)与忠义之士沈达义结(🍮)金(✖)兰,与来上(shàng )海报父仇的林依依在(zài )斗(⏺)智斗勇中成为(🔩)莫逆(nì ),女扮(bàn )(🛑)男装的林依(yī )依爱上(shàng )(🌑)洪三。洪三接(jiē )近富家(jiā )女于(✋)梦竹,于梦竹爱(🙄)上洪三。严华遇(yù )险,为共产党人梁兴义所(🤲)救,加入(💠)共(gòng )产党。林依依为(wéi )报(bào )仇铤而走险,洪(👣)三与其奔走天(💹)涯。林依依遇难(💍),洪三重回(huí )上海滩。在严华和梁兴义进步思想的感召下,洪三放弃来之不易(yì )(📧)的(🔍)“美(měi )(🤥)好(hǎo )(⏲)生活”,为护送梁兴义(💸)离开上海倾其所有(yǒu )甚(shèn )至生(🔙)命。洪三(🆙)逐渐(🔫)懂得(dé )(🔥),共产党(⏳)带(🏓)领的这(zhè )条(🔲)道路,才(👗)是他所(suǒ )想(xiǎng )追求的远大前程。