杰米在唐人街与联邦探员见面后，发现一起犯罪，但追逐中罪犯却遭杀害。丹尼需要处理这一案子以免弟弟受到内部调查。

一名女孩遭遇绑架，杰基与丹尼怀疑她那患有毒瘾的男朋友有重大嫌疑。艾琳与老板的关系有进一步发展。

里根夫妇的邻居被谋杀，他们的儿子成为首要嫌疑人。杰米发现自己的配枪意外消失，他确信自己正被蓝色圣殿骑士追捕。

Danny and Baez investigate a local bombing, but meet with tension and resistance from the community during the investigation. Meanwhile, Frank must deal with the political fallout when a man punches an officer who was overly aggressive in his questioning.