连环大斗法是一部片，黑蓝马与白金龙均是私家侦探，二人家族是世仇，代代相争。富商严西聪家传之宝夜明珠被盗，贼人署名曾灶财，但无人得知曾灶财是何方神圣。黑、白二人接手此案，并决定以破案先后分出胜负，解决家族纷争。同时警方亦派出两名侦探调查此案，一场连环大斗法随即展开。
Two private investigators who were sworn enemies are teaming up against their will to solve a jewelry robbery.
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