改编自MickHerron所著小说系列的第五本《LondonRules》。科技宅RoddyHo有了一个魅力四射的新女友，而大家都对此持怀疑态度。当一系列越来越离奇的事件在城市各处发生时，“流人/慢马”们需要负责查清其中的关联。毕竟，JacksonLamb清楚在间谍活动的世界中，“伦敦规则/LondonRules”应该始终适用。

英国首相AbigailDalton（苏兰·琼斯SuranneJones饰）因医疗危机而竞选公职。VivienneToussaint（朱莉·德尔佩JulieDelpy饰）是第一位即便面临解决法国边境问题，无论如何都要竞选连任的法国女总统。如果两位女性能够达成一致，那一场峰会可能会是她们渴望的答案。但当Abigail的丈夫被绑架、Vivienne遭到勒索时，她们都面临着难以想象的选择。被迫陷入激烈竞争的两人，从政前途和个人生活都可能悬而未决，她们能否齐心协力揭开威胁两人的阴谋呢？

Thedramadepictsthesurreptitiousinvasionofthelandourfarmercherishes,withdevastatingconsequences,ashislivelihood,homesteadandfamilylifearethreatenedbylocalcountylinesdrugsdealers:urbangangsusingtheBritishcountrysideasafieldofoperations,movingdrugsandmoneybetweentheirinner-cityhubsandprovincialareas.NathanWilliamsisamanwhorunsafarmwhichhasbeeninhisfamilyforgenerations,caughtinanumbingrhythmofworkandgrieffollowingthedeathofhiswife,Sabine,twoyearspreviously.AsingleparenttoteenagerJohnny,Nathanisuniquelyplacedandpossessesenoughpent-upenergytotakeonthegangsthatthreatentoengulfhisson.Consequently,heembarksonapersonaljourneythatwilltakehimeverfurtheroutofhiscomfortzoneintoadarkalternativeworldashefightstoprotecthisfamily,hishomesteadandhislegacy.He’smissedallthecluesthatthecountryidyllaroundhimhasbeenfatallycompromised,contaminatedbywavesofcriminalityspreadingandmutatingvirus-likefromthecity.NowNathanmustacceptthattherusticatmosphereofhischildhoodislonggone,replacedbysomethingaltogethermoreperilous.AndtheonlywayforNathantosurviveinthisbravenewworldistolearntherulesandfightback.