This very Kafka-esque film is Keaton's response to the Fatty Arbuckle scandal.[citation needed] Even though the central character's intentions are good, he cannot win, no matter how inventively he tries. He gets into various scraps with police officers throughout the film. Eventually, he unwittingly throws a bomb into a police parade and ends up being chased by a horde of cops.At the end of the film, Keaton's character locks up the cops in the police station. However, the girl he is trying to woo disapproves of his behavior and gives him the cold shoulder. Therefore, he unlocks the police station and is immediately pulled in by the cops. The film ends with the title "The End" written on a tombstone with Keaton's pork pie hat propped on it.One of Keaton's most iconic and brilliantly-constructed short films, Cops was deemed "culturally, historically, or aesthetically significant" by the United States Library of Congress and selected for preservation in their National Film Registry in 1997.

该片被誉为台湾“新电影”的开山之作。四位导演拍摄的四段故事（《小龙头》、《指望》、《跳蛙》、《报上名来》）构成了童年（小学）、少年（中学）、青年（大学）、成年（社会）四个人生时期（阶段）。每个阶段都有相应的梦幻世界的快乐和现实世界的烦恼，只是随着年岁增长，两者比例会有所变化。童年因某个好伙伴的离去而忧伤的小朋友（《小龙人》），成人结婚后的烦恼，可能会是因钥匙丢在房里只能穿着短裤在外面晃动（《报上名来》）。而青春期时被帅气强壮的大学生房客吸引了目光的女孩（《指望》），进了大学未尝不会变成另一种模样（《跳蛙》）。——人生充满多种可能，阶段的人生也没有好坏之分，只过就好。

抗战期间的四川乡村，国民党反动派借抗日之名，以前线兵源不足为幌子，大肆在乡村抓丁，从中捞取好处，搞的民不聊生。师管区卢队长（张逸生 饰）向王保长（陈戈 饰）索要壮丁，王即向地主李老栓（吴雪 饰）索要壮丁捐。地主李老栓层层盘剥手下的佃户，逼死姜国富（邵华 饰）并抓走他儿子当替身。过了段时间，李老栓在国民党当团副的儿子耀武扬威地回到家乡，李老栓不知就里，指望儿子能压一压卢队长和王保长的威风，老婆和儿媳也也吹起了枕边风。而卢队长和王保长又怎甘心失去这买卖壮丁所带来的好处，设计陷害李老栓不成，干脆联合李团副加倍抓壮丁，妄想钱来的更多更快......

故事背景围绕沈威扮演的二五仔为坐上社团龙头的位置出卖社团主脑石坚，并伙同争夺新地盘的新社团主脑吞并地盘而展开的，为了给石坚一家报仇清理门户和救出被掳去的梁家仁之爱女，梁家仁、徐少强、王龙威三兄弟跟新社团展开一场情与义的血战 .....