主人公(gōng )洪三(sān )携母(🆓)亲和好友(yǒu )齐林(📒)到(dào )上海投奔严(yán )华,卷入两大(dà )公(gōng )司权利(🍥)斗(dòu )争(zhēng )。严(🎹)华(huá )此时是一名码(🔬)头工人(🐮),他(tā )不(bú )畏(wèi )强权被(bèi )(👋)推(⏬)举为工(❣)人领(🏇)袖(xiù )。洪三则(🖲)凭(píng )(⚫)借(jiè )机智多次在凶(xiōng )险的上海滩(tān )化(huà )(🙍)险为夷。洪(hóng )三(🚉)与忠义之士(🛺)沈达义结(jié )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(yī )爱上洪三。洪三接(㊗)近富家(jiā )(💻)女(nǚ ) 于梦竹,于梦(🙌)竹爱(ài )上洪三。严华遇险,为共产党(⛏)人梁兴义(yì )所(🔔)救,加(jiā )入共产党。林(🏯)依依为报(bào )仇(chóu )(🐀)铤而走险,洪三与(👣)其奔走(🈁)天涯。林依依遇难(nán ),洪三重回上海(🈸)滩。在(🐛)严华和梁兴(xìng )义进步思想的感召下,洪三放(fàng )弃来之不易的“美好生活”,为护送梁兴(🔷)义离(lí )开上(🥅)海倾其所(suǒ )有甚(shèn )至生(shēng )命。洪三逐渐懂得(dé ),共产(🚡)党带领的这条道路(lù )(🔲),才(cái )是(😳)他所想追求(🍺)的远大前程。