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韩冬（葛优 饰）是一个出租车司机，他生性老实，把车常年包给旅行社老板阮大伟（傅彪 饰）做生意。然而阮大伟却是个奸商，长期拖欠韩冬包租费。 　　韩冬的姐姐发生了意外，变成了植物人躺在医院，需要大笔医疗费。无计可施的韩冬决定绑架阮大伟的女友小芸（吴倩莲 饰），威胁他还钱。小芸十分厌恶这个粗俗的歹徒，然而当她听阮大伟说，宁可韩冬撕票和不给钱的时候，她心里失望透顶。 　　韩冬为了追回欠款，小芸为了报复阮大伟，两人共同商议上演了一出戏来捉弄阮大伟。阮大伟气急败坏，发誓不会放过韩冬。老实巴交的韩冬被吓怕了。不料小芸得知了韩冬大费周章只为救姐姐，打心里喜欢上了这个其貌不扬的老实人。The honest and kind taxi driver Han Dong rent his car to the boss of a travel agency Ruan Dawei all year long. However Ruan defaults his overdue 90000-yuan rental to Han all the time for a variety of reasons. After many inconclusive claims for his deserved rental, Han picks up the Ruan's girlfriend Yun from hospital and tell Ruan that he kidnaps Yun to force Ruan to repay the money. Nevertheless Ruan says he would rather let Han kill the hostage than pay back money. Yun knows that her life is less important than money for her boyfriend and wants to trick Ruan with Han.