珍妮（周姮吟 飾）和盧克（莊凱勛 飾）是一對(duì)感情十分要好的戀人，一天，盧克送給了珍妮一支最新款的智能手機(jī)，令珍妮芳心大動(dòng)，愛不釋手。可正準(zhǔn)備甜蜜約會(huì)的盧克被老板一個(gè)電話找回了公司，珍妮只得一人徘徊在臺(tái)北街頭，又于誤打誤撞之中闖入了熱鬧非凡的通化街夜市。這里的一切都讓珍妮感到新奇，當(dāng)她的注意力完全被香噴噴的美食和攢動(dòng)的人流所吸引時(shí)，她并沒有發(fā)現(xiàn)，有一雙邪惡而又貪婪的眼睛，已經(jīng)盯上了她兜里的手機(jī)。
　　芽芽（朱芷瑩 飾）于偶然之中得到了一部他人遺失的手機(jī)，這新潮的機(jī)器令芽芽非常想要一探究竟，但可惡的密碼卻屢屢將她拒之門外，與此同時(shí)，手機(jī)的原主人也找到了芽芽，將她認(rèn)作為偷手機(jī)的小偷。

　　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.