主人(rén )(🕕)公洪三携母(mǔ )(🆓)亲和好友齐林到(dào )上海(🍩)投奔严华(🕋),卷(🕟)入两大公(🕰)司权利斗(🎺)争。严(🎹)华此时是一名码头工(gōng )人,他不畏(wèi )强权被推举为(🎏)工人领(lǐng )袖。洪(hóng )三则(🖲)凭借(jiè )机智多次(🎩)在凶险的上海滩(tān )化(🙍)险(💆)为夷。洪三与(🏐)忠义之士沈达义(yì )结金兰(😚),与来上海报父仇的(de )林依依(😱)在(zài )(🐖)斗智斗(💞)勇(yǒng )(⏺)中成为莫逆(🚣),女扮男装的林依(😞)依(🖲)爱(ài )上洪三。洪三接(jiē )近富家女(nǚ ) 于梦竹(zhú ),于(yú )梦竹爱上洪三(sān )。严华(🙉)遇险(xiǎn ),为(wéi )共(gòng )产(chǎn )党人(rén )梁(liáng )兴义所救,加入共产党(dǎng )。林依(yī )依为报仇铤而(🚴)走险,洪(🕯)三(🌮)与其(🗳)奔走天(tiān )涯。林依依遇(🍑)难,洪三(sān )重回上海(hǎi )滩。在(zài )严华和梁兴义进步思想的感召下(xià ),洪三放弃来之不(🐡)易的“美好(hǎo )生活”,为护送梁兴(xìng )义离开(kāi )上(shàng )海倾其(🏃)所(suǒ )有(🏴)甚(🚲)至生(shēng )命。洪三逐渐(🆙)懂(🖍)得(🔫),共产(🚡)党(🌸)带(📞)领的这条(tiáo )道路,才是他所想(📤)追求(qiú )的远(yuǎn )大前程。