『福導航入口』介紹:上海灘十里(li)洋場,是無數人(ren)(ren)追夢的(de)樂園……天生(sheng)神(shen)力(li)(li)(li)的(de)青年馬(ma)永(yong)(yong)貞(zhen)(zhen)(伍允龍(long)(long)(long) 飾)從家鄉(xiang)來到上海謀生(sheng),在(zai)當時占有(you)上海一半勢(shi)力(li)(li)(li)范圍的(de)老(lao)幫派斧頭(tou)幫治下謀得一份(fen)苦工,豈料(liao)因同(tong)伴竊取斧頭(tou)幫的(de)鴉(ya)片,在(zai)后者發難之(zhi)際(ji)與(yu)同(tong)住(zhu)貧民區的(de)老(lao)鐵(tie)(洪金寶 飾)將工友救(jiu)下,為(wei)(wei)了(le)追蹤那批(pi)鴉(ya)片的(de)下落,馬(ma)永(yong)(yong)貞(zhen)(zhen)與(yu)上海另一半勢(shi)力(li)(li)(li)范圍的(de)主人(ren)(ren)——新近崛起的(de)龍(long)(long)(long)七(安志杰 飾)不(bu)(bu)打不(bu)(bu)相識,并因為(wei)(wei)受到斧頭(tou)幫排擠,不(bu)(bu)得不(bu)(bu)與(yu)同(tong)伴們投奔龍(long)(long)(long)七。因秉持母親的(de)教(jiao)誨,馬(ma)永(yong)(yong)貞(zhen)(zhen)無意加(jia)入龍(long)(long)(long)七的(de)幫會,但(dan)龍(long)(long)(long)七不(bu)(bu)以為(wei)(wei)意,反(fan)與(yu)之(zhi)結為(wei)(wei)知交。不(bu)(bu)久,那批(pi)鴉(ya)片的(de)真正(zheng)主人(ren)(ren)——日本人(ren)(ren)為(wei)(wei)了(le)介入上海,利(li)用斧頭(tou)幫和龍(long)(long)(long)七的(de)矛盾欲(yu)置龍(long)(long)(long)七與(yu)老(lao)鐵(tie)等人(ren)(ren)于死(si)地,馬(ma)永(yong)(yong)貞(zhen)(zhen)忍無可忍,誓要復仇……