After secret agent Michael Scarn (played by Scott) is forced into retirement due to the death of his wife Catherine Zeta-Scarn, the President of the United States of America (played by Darryl Philbin) requests that he prevent Goldenface (played by Jim Halpert) from blowing up the NHL All-Star Game and killing several hostages. Scarn goes undercover and learns how to play hockey, killing another hockey player (played by Oscar Martinez) to make it into the game, but after confronting Goldenface, he is shot. He later recuperates but learns that the President was in on it all along. Depressed, he goes to a bar to drown his sorrows. The patrons of the bar sing a song called "The Scarn" which he danced to with his wife, which cheers Scarn up immensely. With his courage restored, Scarn is able to save the day and blow up Goldenface in the process.

藉由台北都會人對於愛與性不同的觀點，交會出現代的生活樣貌。網路上虛擬的愛情；買賣的性交易―援交、牛郎；伴侶的性別。性 ― 性別 ― 幸福。這三者間似乎交織出令人省思的議題。

Laughing（谢天华 饰）本认是警方的卧底，但政因为一择宗贩毒案件，被警司潘SIR（黄日华 饰）追捕。其实Laughing加入警队之前，本就是个黑帮成员，一直跟随其老大一哥（黄秋生 饰）在道上打拼。一哥对Laughing照顾有加，Laughing视一哥有如亲兄。一哥为了保护自己的地盘及非法生意，竟要求Laughing投考警队，让他可以掌握警方行动。Laughing在警校成绩优异，可惜天意弄人，他根本没机会待在警队，因为反黑警司冼SIR（元彪 饰）被Laughing的黑道气味所吸引，竟指派他做卧底探员。就这样，Laughing竟成了"双重卧底"，一哥也乐得Laughing被送进社团去对付自己的同门座头（吴镇宇 饰）。在这已经复杂的状况下，一件事情令Laughing的处境更复杂，他竟爱上了座头的妹妹Karen（陈法拉 饰）。面对法治、恩义、感情的抉择，Laughing将如何自处？无论选择哪一边，都是一场变节，Laughing最后将投向哪一方？

中情局获得情报，得知他们的特工中出了一个叛徒，准备将中情局布置在东欧的特工名单出卖给外国特工组织。在特工头目吉姆（乔恩?沃伊特 Jon Voight 饰）的策划下，伊森（汤姆?克鲁斯 Tom Cruise 饰）所住的一组特工赶往了他们交易的地点。岂料，当他们按计划赶到 时，却中了埋伏，一组人中除了伊森和吉姆的妻子克莱尔，其他队员都被杀害。这时，伊森的账户无端端多出了12万美金。伊森成了内鬼的最大的嫌疑犯。无奈之下，伊森只能凭个人之力独闯龙潭虎穴去找出出卖他们的内奸。他和外国间谍组织的接头人麦克斯取得联系后，答应帮麦克斯偷出中情局的间谍名单以交换中情局内鬼的名字。