Strange cravings and hallucinations befall a young couple after seeking shelter in the home of an aging farmer and her peculiar son.

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？

第一次世界大战期间，德国政府以漂亮的口号呼吁年轻热情的学生志愿者投身战场保家卫国。一腔热血的德国青年保罗·鲍曼（卢·艾尔斯 Lew Ayres饰）怀着英雄理想投身到一战之中。然而当保罗和他的同学们经过训练后，被派往西线参战时，他们目睹到的却是残酷的饥饿、血腥和死亡。战争的荒谬无情让保罗从迷恋战争到心灰意冷，因伤返乡。可是愚昧的乡民根本不知前线的危急，保罗义愤填膺地向学生陈述战争的无情，西线无战事。他提前结束休假返回前线，在战壕中伸手捕捉一支蝴蝶时，不幸被流弹击中。由好莱坞著名导演刘易斯·迈尔斯通执导的经典反战题材影片《西线无战事》，改编自德国作家雷马克的同名小说。这部堪称电影史上“最伟大的反战电影”之一的影片，一举荣获1930年第3届奥斯卡金像奖最佳影片、最佳导演和最佳编剧提名。导演用简明精练的镜头再现了惨绝人寰的战争实况，也以细腻流畅的手法写活了保罗爱国迷梦的幻灭。影片结尾处保罗捉蝴蝶被子弹击中的镜头，已成为电影史上的经典瞬间。

An affluent medical professor, Komiya, and his bossy wife, Tokio, are to look after Setsuko, their high-spirited niece from Osaka. Setsuko is a liberated woman who does what she wants, including smoking, even though she is a minor. On Saturday, the professor does not feel like going to his weekend golf game, but his wife packs him off anyway. So he leaves his bag at the apartment of his student Okada, and goes to a bar with a friend. Setsuko traces him there, and insists that he take her to a geisha house. When she gets rather tipsy, the professor calls Okada to take her home, while he sleeps at Okada's. The wife becomes suspicious of Setsuko when she sees Okada bringing her home, and also of her husband when she discovers that he did not go golfing.