少年得意,颇具学识的状元书生高升(郑少秋 饰)得到了雍正皇帝的赏识,最后被任命为弘历,也就是后来的乾隆皇帝的陪读。在紫禁城,高升一待就是二十多年。他不仅是皇帝的伴读,还为乾隆皇帝解决了大大小小的事情,但乾隆妒高升才学突出,因此高升没有一官一职,倒也活的自在。新入宫的小宫女如意(杨怡 饰)颇得皇帝喜欢,但碍于如意卑微的身份和皇后的威严,一直未能得手。而这时,如意却惹上了莫须有的罪名,最后遗失在了宫外,不知去向。
乾隆命高升追逐如意的下来,高升借机感受外面的大千世界,来到了扬州城。在这里找到了如意的下落,结识了侠妓,万花楼的老板苏三(邓萃雯 饰)。二人从互看对方不顺眼到后来心心相惜,可事情不可能一帆风顺……。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.。