Geena Sloane starts her summer off with the perfect plan: working at Triple Shot Betty's by day and giggling and painting toenails by night at sleepovers with her best friend, Amber, and her cousin, Hero. Amber and Hero are finally going to meet and Geena knows they will hit it off.

There's just one problem, once they do meet, Geena realizes that she was very wrong. Hero and Amber hate each other and Geena is caught in the middle, needing to be loyal to both, but not knowing how. Geena works hard trying to make them like each other, but it just isn't working.

Then there are the cute boys of the summer - PJ Jamieson, the unstoppable flirt who is way to loyal to his girlfriend to ever cheat on her, John "the Man" Jamieson, his older valedictorian brother who wants Hero, Claudio, the Italian intern with whom Hero is obsessed, and Ben Bataglia, Geena's archenemy and the one who has caused her to be called a "guy-basher." The summer progresses roughly, but by the end, it all works out for the girls, and Geena Sloane gets her perfect summer after all.