话唠贝尔(奎恩·拉提法 Queen Latifah 饰)是一个典型黑人女人,有一个感情稳定的男友杰西(亨利·西蒙斯 Henry Simmons 饰)。因为厌倦了送外卖的工作加上自己车速一流,贝尔决定改行开的士。不久以后,她就因为时速超过135英里而出名了。沃施本警官(吉米·法伦 Jimmy Fallon 饰)做事不利索加上 运气不好,自从搞砸了一件毒品案,上司玛塔(珍妮弗·艾斯波西多 Jennifer Esposito 饰)对他的态度就怎么友好了。为了挽回自己的形象,他一心想立一场功。纽约城内,美女劫匪(吉赛尔·邦辰 Gisele Bündchen 饰)接连抢劫银行,而警察们却对她的车速望尘莫及。偶然的机会,沃施本看到了贝莉的高超车速,决定请她帮忙逮捕银行劫匪。于是,计程车女司机贝尔就此和女劫匪开始了一场公路大比拼……Belle Williams is a speed demon. Flying through the streets of New York in her tricked-out taxi, she's earned a rep as New York's fastest cabbie. But driving a hack is only a pit stop for her real dream: Belle wants to be a race car champion. And she's well on her way--until she's derailed by overeager cop Andy Washburn, whose undercover skills are matched only by his total ineptitude behind the wheel. Washburn, whose lack of vehicular skills has landed him in the precinct doghouse, is hot on the heels of a gang of beautiful Brazilian bank robbers, led by Vanessa, their cold, calculating--and leggy--leader. To nab the evasive crooks, drivers license-less Washburn convinces Belle to team up with him to pursue Vanessa and crew. Belle has carte blanche to drive at any speed and break any law. The car-less cop and speed-demon cabbie--New York's unlikeliest partners-- begin a high-speed game of cat and mouse with the robbers. That is, if Belle and Washburn don't end up killing each other first.