主(zhǔ )人公洪三(👷)携(🔨)母亲(qīn )(⛲)和好友(yǒu )齐林到(dào )上(shàng )海投奔严华,卷入两(liǎng )大公司权利斗(dòu )争(🔧)。严(🎹)华此时是(shì )一(yī )名码头(🏴)工人(🐮),他(tā )不畏强权被推举为工人领袖。洪三则凭借机智多次(cì )在凶险的上海(🕯)滩化险为夷。洪三(sān )与忠义之士(🛺)沈达(🎿)义结(🥞)金兰(😚),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(ài )上洪三。洪(hóng )三(sān )接(jiē )近富家(jiā )女 于梦(🔝)竹(✋),于梦竹爱上洪(hóng )(🙄)三。严华遇(yù )险(xiǎn ),为(⏰)共产(chǎn )党(⛏)人(rén )梁(🤷)兴义所救(🚻),加入共产(💠)党。林依依为报(bào )(🕐)仇铤而走险,洪三与(yǔ )其(qí )奔走天涯(yá )(💝)。林依依遇(🍑)难(👊),洪三(🚗)重回上海滩(tān )(➡)。在严华和梁(liáng )兴义进步思想的感召下,洪三放(🏒)弃(🙎)来(lái )之不易的“美好生活”,为护送梁(🥤)兴义离(lí )开上(shàng )海倾其所有甚至生命。洪(hóng )三逐(zhú )渐懂得,共(gòng )产党带领的这条(🎐)道(dào )路(🔲),才(🕕)是(shì )他所(suǒ )想追求(qiú )的远大前(🛃)程。