1949年初，上海。某紗(sha)廠工(gong)(gong)人(ren)在地下黨(dang)支部書(shu)記張世芳（孫錚 飾）領導下，因(yin)不滿反(fan)動(dong)(dong)資本家剝(bo)削壓(ya)榨，組織起了全廠大罷工(gong)(gong)。由于(yu)對資本家陰險(xian)狡詐的(de)本性認(ren)識不足，加之工(gong)(gong)廠內部工(gong)(gong)賊(zei)的(de)破壞，罷工(gong)(gong)活(huo)動(dong)(dong)一度受(shou)阻，
