一场百(bǎi )年罕(👷)见的蝗(huáng )灾侵袭了武周(🏽)大地,武(🌰)则天(🕋)下令(🕟)送赈灾(🔱)银往(🤢)灾区,却在(🎗)途(🎹)中被劫(🐉),数万两白银竟化蝶(💤)消失(🎾)!狄仁杰命其(qí )亲随(🌗)赵员镇奉(fèng )(😎)命彻查此(cǐ )案,自己(🎩)微(wēi )服(fú )潜(🛍)入民(🕖)间调(diào )查。在查(chá )案的过(guò )程中他们遇到了(🎿)需自证清白(🍮)的嫌疑人官小(🚑)柒,又(yòu )(🕕)陷入了赈灾银再(zài )次被(bèi )劫的困窘(jiǒng )之境。灾民(🛑)民怨(😞)四起,化蝶案扑(pū )朔迷离,朝堂权(quán )谋暗(àn )潮汹(xiōng )涌,狄仁(rén )杰(jié )是否能查清真(zhēn )相,天(tiān )下又是(shì )否能重(chóng )回太平?