正如生活在黑手党中的罪犯和追捕它的执法人员所说的那样，深入研究黑手党的秘密地下世界。 通过前帮派成员，线人和FBI特工揭露美国历史上最致命，最臭名昭著的有组织犯罪集团的倒台，这部由六个部分组成的戏剧性系列影片记录了美国现代黑帮的真实生活故事。最近解密的档案、联邦官员和黑手党成员自己的第一人称叙述以及罕见的陈年归档镜头，这些材料为困扰美国数十年的原始，暴力和腐败的黑社会提供了新的视角。

上世纪70年代，哈莱姆黑人区，弗兰克•卢卡斯（丹泽尔•华盛顿 饰）是黑帮老大约翰逊的司机。约翰逊暴毙后，弗兰克充分利用了这个来之不易的机会，将地下世界的所有权利分配进行了重组，成功上位，接手大佬事业，掌控了毒品交易大权。期间他远赴东南亚金三角走私高纯度海洛因，张罗自己的家族兄弟，集结了一帮为他卖命的手下，一股黑暗势力正在兴起。 另一边，警察里奇•罗伯茨（卢塞尔•克劳 饰）家庭破裂，与主流社会格格不入，整天以一副邋遢鬼模样流连于街头。他慢慢觉察出毒品圈内的风起云涌，，并展开了秘密调查。 随着调查的深入，罗伯茨和卢卡斯之间的距离越来越短，两个气质相近，惺惺相惜的男人，不可避免地进行正面对决……

约翰·猎鹰坐了10年牢，如今他要在24小时内对所有人展开报复。

Nick Romano is a young Italian American fighting his own personal demons. He's got a chip on his shoulder and a lot to prove. Teamed with his crazy but always loyal partner Carlo, the two small time hoods are on the streets trying to hustle and make a living. Nick fits in well with this fast underworld lifestyle that he's been caught up in, however this lifestyle has caused a riff between Nick and his girlfriend Vanessa. Nick fights to not lose his loved ones, while trying to stay in good grace with the very powerful local crime boss. All the while, still trying to figure out who he is in life. Written by Nino Cimino

An alcoholic barmaid is distraught when her former lover, a notorious gangster, re-enters her life. She is forced to relive painful past experiences and choose between the gangster and a pleasant singer she has found comfort in.

俗话说“就算是再忠诚的狗，若随意对待也会咬人”。“용개”如同一只毫无顾忌、在 무산一带横行霸道、尽干些荒唐事的“疯狗”，他是老板“최 회장”的忠实手下，甚至不惜去做那些见不得人的勾当。一次偶然的机会，他遇到了债务人的女儿“수연”。“용개”曾质疑在 무산出生又在 무산死去有何意义，而随着与“수연”的接触，他渐渐对她萌生了爱意，并且生平第一次有了离开 무산的想法。然而，“최 회장”却下达了杀掉他的命令，与此同时，“용개”还因竞争对手“상철”的挑衅而陷入了危险之中……

Daya Shankar lived with his family in Kashmir, but then subsequently re-located to Bombay where he took to crime as a career. One day while on the run from the Police, he holes up in a small room with a young bar dancer, Simran. She shields him from the Police, and he falls in love. He finds out the bar she dances in and comes in silently to watch her perform. He had come to her rescue when she was being molested and thereafter asked her to move in with him, which she did. For sometime it was as though they seemed to be living in bliss, then all of a sudden, they were on the run again. Then Daya decided that it was time to settle down, and they adopted a young boy, Bittu, made different passports, and decided to re-locate to Dubai. That did not happen, instead Bittu gets killed, and a heart-broken Simran and Daya are forced to live apart, with Simran moving to Seoul, Korea. It is here that she meets with Akash and both fall in love, get intimate and Simran gets pregnant.

香港に麻薬取引に向かった大岡組の北原は、馴染みの取引先である竜との値段交渉の決裂から、新興勢力の毛の配下・チャンと取引をする。竜の配下の見張りの眼をくぐりぬけ、約束の薬を北原に手渡したチャンだったが、北原は執拗な竜の狙撃にあい、来日する中国歌舞伎のスター・李に薬の包みを預けて息絶えた。大岡組では、北原の死因を探るべく、幹部の藤島を香港に送る一方、李から薬を受け取るために部下を横浜に派遣するなど、慌しい動きを見せていた。だが、香港で北原が竜に殺されたことを知った藤島が東京に戻ったその頃、慎重を極めた薬の受け渡しは、絶対に知られるはずのないルートを襲われ、失敗に終わっていた…。

谷峰是夜总会老板，号称老大，老二动脑筋向老大要些什么，要老大签字，老大不签，动下杀机。一日，来一班枪手将老大杀死，老大契仔大哭说给自己人杀死的，要报此仇，暗中查账，果然是老二和老三勾结合力将老大杀死，契仔最后将老二、老三连续杀死，他自己也被扣查办。

本系列节目将揭露1950至1990年代，一手操控英国最危险的三座城市：格拉斯哥(Glasgow)、利物浦(Liverpool)和曼彻斯特(Manchester)的黑道老大。锁定关键事件、重大罪案和备受瞩目的审判经过，这些历时30年的帮派故事将透过画面重演。观众将看见帮派分子如何以残暴手段控制英国大城，以及警察努力执法保护人民的难苦过程。