主(zhǔ )人公洪(hóng )三(sān )(⛲)携母亲和好(hǎo )友齐(🐌)林到上(🌰)海投奔严(yán )(🕟)华,卷入两大公(gōng )司(🎺)权利斗争。严华(huá )此时是一名(míng )码头工(💤)人,他不畏强(⏬)权被(bèi )推(❣)举为工(♑)人领袖。洪三则凭借(jiè )机智多(🗄)次在凶险的上海滩(✳)化险为夷(🚉)。洪(🚥)三与忠义之士沈达(dá )义(yì )结金(✖)兰(lán ),与来(lái )(🖍)上海报父仇的林依依在斗智斗勇中(🧚)成为莫逆,女扮(🛑)男装的林依(yī )依爱上洪(🎛)三。洪(hóng )三接近富家女于梦竹(🏂),于梦(mèng )竹爱(🙄)上洪三。严华遇(yù )险,为共(gòng )(⛏)产党人梁兴义所(suǒ )救,加入(rù )共(👺)产(⛳)党(🏯)。林依依为(wéi )报仇铤而走险,洪三(🗳)与其奔(bēn )走天涯。林(lín )依(🍑)依(yī )遇(yù )难,洪三重回上海滩。在(zài )严华和(hé )(🥋)梁兴义进步(🌼)思想的感召下(😝),洪(hóng )三放弃来之不(bú )易(yì )的“美(🤥)好(hǎo )生活”,为护送梁兴义离开上(shàng )海(hǎi )(🏃)倾其所(suǒ )(🚲)有(yǒu )甚(🔎)至生命。洪三(🆙)逐渐懂得(🔥),共产(chǎn )党(dǎng )(⏳)带(dài )领的这(zhè )条(tiáo )道路(🕕),才(cái )是(🎦)他(tā )(📤)所想(xiǎng )追求的远大前程。