Jane (ASHLEY OLSEN) and Roxy Ryan (MARY-KATE OLSEN) may be twin sisters, but beyond their identical looks, they couldn't be more different. Jane is an uptight good girl who's anxious about an upcoming speech that could win a scholarship to Oxford University.
Roxy, on the other hand, skips school so much that warrant officer Max Lomax (EUGENE LEVY) has been trailing her for years. Instead of being interested in academics like her sister, Roxy's ditched school so that she can attend a music video shoot and give her demo tape to the band's handlers.
Although the two don't get along, they end up traveling together to Manhattan for their respective missions. Yet, when a piracy thief slips a hot microchip into Roxy's bag to avoid being caught by the authorities, the twins' day is disrupted. Not only is Lomax hot on Roxy's trail, but they also now have another man following them.
He's Bennie Bang (ANDY RICHTER), a gangster wannabe who works for the entertainment pirates and now has Jane's all important day-planner, without which she'll be unable to give her speech. With the aid of Trey (JARED PADALECKI), the adult son of a Senator, and Jim (RILEY SMITH), a bike messenger, the teen twins try to accomplish their respective goals while continuing to clash with each other.