史蒂夫（迈克尔·道格拉斯 Michael Douglas 饰）是一位资历老道的特工，儿子马克（瑞安·雷诺兹 Ryan Reynolds 饰）即将结婚，和亲家见面成为了身经百战的史蒂夫目前最大的难题。方便起见，史蒂夫将见面安排在了平时和线人街头的餐厅。史蒂夫的亲家是一个名叫杰瑞（艾伯特·布鲁克斯 Albert Brooks 饰）的足科医生，个性十分温和的他不希望生活中有任何出乎他意料的事情发生，史蒂夫复杂的身份显然不能让他满意，一场意外的发生更让杰瑞下定决心，决不让女儿嫁入这样危险的人家。 第二天，警察找到了杰瑞，并在他的口袋里发现了一块危险的核裂变废弃物，杰瑞因此被逮捕。没想到，这一切正是史蒂夫所为，他不仅救出了杰瑞，还与他一同登上了开往法国的飞机。就这样，杰瑞在愤怒和莫名之中成为了史蒂夫的搭档，不幸的是，充满了惊险和笑料的旅程只是刚刚开始。In four days, Jerry Peyser and Steve Tobias will become in-laws when their respective offspring, Melissa Peyser and Mark Tobias, get married. Married Jerry is a Chicago area podiatrist. He is risk averse to an extreme, afraid of heights including being in tall buildings and flying, even watching airline commercials. He is also extremely controlling, having organized the lavish wedding against the simple affair Melissa had envisioned. He is aggravated that he has not yet met Steve, who has missed one family function after another. Divorced Steve is a photocopy machine salesman... or so Mark says. In reality, Steve is a deep undercover CIA field agent, something that Mark knows but is unable to divulge to anyone, even Tracy and her family. His work, which has always overtaken his life, is the reason Steve has missed all these family events. Steve is unwilling to hand over reigns of his cases to his junior partner, the capable Angela Harris. Steve finally meets the Peysers, which Steve manipulates into an undercover work dinner. Steve's current mission involves setting up the sale of twenty year old runaway "Olga" to a French arms dealer, violent Jean-Pierre Thibodoux, which is purely a cover to obtain information clandestinely from Thibodoux. Jerry inadvertently gets embroiled in Steve's case when he overhears the beginning of the deal going down. Jerry does not believe Steve to be one of "the good guys", especially as he learns that the FBI is after Steve, who they believe has become a rogue agent. This belief may affect not only their time together, but their lives and whether Melissa and Mark will get married. Thrown into the mix is Mark's mother/Steve's ex-wife, Judy Tobias, who hates almost everything about her ex-husband except one thing...
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