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该剧描写的是一群普通的人民警察，他们也会犯错误，他们也有私心，但在面对穷凶极恶的毒贩和歹徒的时候用自己的生命捍卫了百姓的安全。在和平年代，他们就是我们身边的英雄，是一群最可爱的人。。A mathematician and author, Luke Williams, is travelling up to London on a train when he meets a old lady, Lavinia Fullerton, who is also going to London, to Scotland Yard. Lavinia tells Luke that in her small village several people have died. The local police are certain that it was all accidental and are taking no action but Lavinia isn't convinced. In London Luke watches, ho...。