The rules have changed since high school...Former chubby computer geek Lainie Ames, now a sexy P.I., has her high school reunion looming just around the corner - and she'll do anything to become the "most likely to succeed" with former prom king Blaine Harper.

Even if it means taking a class at Rules of Engagement - a company that teaches women how to snag the guy of their dreams. Armed with her list of dating do's and don'ts, Lainie is determined to win Blaine's affections. Too bad her every move is foiled by her partner, Jack. But is that because Jack's convinced that Blaine isn't the prize he claims to be...or because he wants a monopoly on Lainie's heart?