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.

　　1861年，Johnnie Gray（巴斯特·基顿 Buster Keaton 饰）是西部大西洋火车公司的一名员工，深爱着他的火车“将军号”，还有他的未婚妻（Marion Mack 饰）。南北战争爆发了，他的未婚妻让他去从军，军方却拒绝了他，认为让他开火车更有价值。他的未婚妻很生气，发誓除非看见他穿军装的样子，不然再也不和他说话。北军正在计划一个阴谋，准备劫走“将军号”，给南军来一次突袭。Johnnie发现了北军的诡计，更意外的在北军的阵营里解救了他的未婚妻。他必须将北军要突袭的情报带回南军的阵地，他一路上驾驶着“将军号”，遭遇重重追击。南北军大战一触即发......