Plot Summary:A French foreign exchange student, named Genevieve, comes to a small town in Texas to attend a local high school where she shacks up with the school's popular head cheerleader, Starla, and her parents. But Starla soon learns that this French girl is not only smart, attractive, and naive, but quite conniving when Geneviere, with no social life of her own, begins to take over Starla's, starting with stealing the affections her parents, her friends and Starla's boyfriend. When Starla is forced to quit the cheerleading squad after getting some bad grads, Genevieve moves in to take her place. When Starla figures out that Genevieve deliberately set it up by giving her bad tutoring to fail all those classes, she begins an all-out personal war against Genevieve to take back her social life. But Genevieve is anticipating exactly that type of response from Starla and soon turns everyone, including Starla's friends and family, against her by playing the poor victim and making it appear that Starla's the aggressor.
史黛拉（简·迈克格雷格 Jane McGregor 饰）身为校啦啦队的队长，拥有天使的面孔和魔鬼的身材，热情奔放的个性让她成为了所有女生们憧憬的对象，亦是全校男孩心目中理想女友的典型。父母希望史黛拉能够学习法语，于是找来了一位名为吉娜芙（派珀·佩拉博 Piper Perabo 饰）的法国交换生，吉娜芙其貌不扬，性格更是畏畏缩缩，她就像一个小跟班一样的躲在史黛拉的身后，大大的满足了后者的虚荣心。 可是，随着时间的推移，史黛拉发现吉娜芙正在暗地里学习着自己的一举一动，当她意识到吉娜芙的野心时，自己的朋友，恋人，甚至拉拉队长的职位都已经被这个深藏不露的女人给抢走了。就这样，吉娜芙代替史黛拉成为了校园里的红人。
