Casey (Soleil Moon Frye) and Grace (Cat Taber) are polar opposites -- and college roommates. While Casey is a promiscuous bad girl, Grace is a straitlaced Southern girl, already engaged to be married to frat boy Charlie (Wil Wheaton). When Casey takes her teasing too far, Grace plots revenge by befriending Joey (Gary Wolf), Casey's friend for whom she seems to have feelings. So begins a war of wits between the two, threatening Grace's marriage and Casey's lifestyle.