特工汉纳威(乔什·哈洛威 Josh Holloway 饰)执行任务时遇害,核机密文件被女杀手莫伦(蕾雅·赛杜 Léa Seydoux 饰)截获。为了找回文件,特工班吉(西蒙·佩吉 Simon Pegg 饰)和特工简(宝拉·巴顿 Paula Patton 饰)从俄罗斯监狱救出了伊桑·亨特(汤姆·克鲁斯 Tom Cruise 饰)。他们接受的幽灵协议任务便是从克林姆林宫盗取核军事密码。然而,当他们接近目标时,却发现被恐怖分子亨德里克斯(迈克尔·恩奎斯特 Michael Nyqvist 饰)捷足先登,抢走了核军事密码。在爆炸中,亨特受困医院,遭俄特工的追捕,幸好他身手矫捷,才化险为夷。不过,亨特的上司也在混乱中丧生,只剩下其助手布兰德(杰瑞米·雷纳 Jeremy Renner 饰)与亨特死里逃生,加上班吉和简,逼上绝境的四人开始了最后一搏,从迪拜到印度,他们出生入死,与恐怖分子斗智斗勇…
Dr. Watson is shocked to learn that his good friend Sherlock Holmes has a brother, Mycroft, and that they are on their way to meet him on an urgent matter. There they learn of the strange case of Mr. Melas, a Greek interpreter, who was roused from his sleep in the middle of the night and required to interpret for a man who was clearly being held against his will. That man was beaten, bound and not allowed to speak but only to write out his answers to the questions he was posed. Clearly his captors are trying to force him to sign a document and are also keeping his sister captive. When Melas is taken a second time to interpret, Holmes, Mycroft and Watson must move quickly if they are to prevent a murder. Written by garykmcd