主人(🕕)公洪三携(xié )母亲和(hé )好友齐林(📒)到上海(hǎi )投奔严华(🕋),卷(juàn )入两大公(🕰)司权利斗争。严华(huá )此时是一名(míng )码(🔬)头工人,他不(bú )畏强(qiáng )权被(👋)推(tuī )(⏬)举(jǔ )(🎲)为工人领袖。洪(hóng )三则凭(píng )借机智多(duō )(👑)次在凶险(xiǎn )的(🎡)上(shàng )海滩(tān )化险为夷。洪(🛹)三与忠义之士沈达义结金兰,与(yǔ )来上(shàng )(😻)海报(bào )(🖍)父(fù )(🚑)仇的(🥀)林(🕕)依依在斗智斗勇中成为莫(mò )逆,女扮(bàn )男装的(🛑)林依依爱上洪三。洪(🎛)三接(jiē )近富(fù )家女 于梦竹(✋),于(yú )梦竹爱(ài )上(shàng )洪三(sān )。严(🙀)华(🙉)遇险,为共(gòng )产党人梁兴义所救,加(jiā )入共产(chǎn )党。林(🏯)依依(yī )为(🥕)报仇铤(dìng )而(🚴)走(zǒu )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(liáng )兴义进(jìn )步思(sī )想的感召下,洪(😝)三放弃来之不易的“美好生活”,为护送梁(liáng )兴义离开上海倾其所有(yǒu )甚(🚲)至生命(mìng )。洪(🌱)三逐渐懂得,共产党(dǎng )带领的(🏓)这条道(🍁)路,才是(😳)他(👗)所想(📤)追求的(de )远大前程(⏺)。