《乘龙怪婿4》延续前3部紧扣时事、借古讽今的风格，人物命运发生的戏剧性变化是该武德训因一文钱的失误而下台，沦为一心奋发的打工族；贾发为缴银两保"公爵"称号而四处找钱；尚下九当上了镇官却志大才疏；贾夫人无意中得到深厚内功四处发威……一系列喜剧反差也随着人物命运的变化而产生：武德训平民身份和官腔的反差、尚下九贵为镇官与小市民习气的反差、万金尤富婆身份与长舌妇本质的反差等等。而貂蝉的新对手，东北青年冬豪冲也将登场，进入客栈当伙计，与美女老板貂蝉展开一段迂回而浪漫的爱情。
天才国画师辛意回到风景秀美的家乡小镇，她步步设局，想要成为知名收藏家关山海的聘用画师。辛意想方设法接近关家，是为了查清十几年前的惨案——辛父被骗入制假工厂后暴毙，妹妹阿浓惨遭凌虐精神崩溃。辛意以身为饵，只为钓出当年惨案的幕后真凶。关键时刻，关山海的儿子关淮对自己抛出橄榄枝，想要借她之手夺权上位。自此，各怀鬼胎的二人展开合作，在宁静祥和的小镇搅动滔天的风暴……
Following the conviction of some of those involved in the theft and handling of the Brink’s-Mat gold, the police realised that those criminals only ever had half of it. Series two explores what happened to the other half, and the criminal fortune it created. As the police investigation continues, it becomes a tense, high-stakes journey into international money laundering and or...
