Over a 24 hour period, 17-year-old sisters Jane and Roxy Ryan, adversaries who begrudgingly journey together from their Long Island home to New York, where the uptight overachiever and Straight A student Jane is due to deliver a speech to qualify for a prestigious college scholarship abroad. Meanwhile, laid-back punk-rock rebel Roxy hopes to get backstage at an underground music video shoot for punk-pop band Simple Plan so that she can split her demo tape to the group. Roxy and Jane's plans go awry when a mix-up involving Jane's day planner lands them in the middle of a shady black-market transaction. Pursued by an overzealous truant officer and accused of kidnapping a dog belonging to a senator, the Ryans must find a way to work together to thwart the forces threatening to jeopardise Jane's college dreams and ship Roxy off to a convent school. Romantic interest comes in the form of a Senator's bad boy son and a bike messenger.