忠臣(chén )(🕕)宋(🍅)沅(🌠)被奸相(xiàng )贾守道陷害入狱(yù ),只(zhī )有(yǒu )携(xié )(🌰)先皇所(suǒ )赐的(🕸)「免死铁券」上京伸(shēn )(🎗)冤,方(fāng )可免罪(🌰)。贾守道派出(chū )锦(💤)衣卫高思(sī )贤(王侠(🎏)饰)搜(sōu )夺铁券,以置(⚫)宋沅于死地;宋妻(🛍)及(🎡)女宋(sòng )洁(李(💆)菁饰)将(jiāng )「免(🏐)死铁券」藏(cáng )(📞)于琵琶中(🗑),沿(yán )途卖(🙁)唱掩饰。无赖吴三(魏平(🤷)澳饰)得知宋氏母(mǔ )女真(zhēn )正身(shēn )份(🚨),心想利用(🔢)她们换(🦗)贵官高禄,将高思贤(xián )引来,混乱中(🙌)「免死铁券」被做在砖內,却无人(⛏)知晓……