You know that girl at school who always gets straight A's? The one who never gets in trouble. That girl who reads books instead of playing on the monkey bars like a normal first grader, and who always went to the library to eat lunch in high school. Nina Thomas was that girl once. Until the summer of her eleventh grade year. Fast forward six years, and she's a totally different person. She's done with that summer - that was the past, this is the present. But when her best friend Addy decides to get married and invites all her high school friends to the huge wedding, Nina's forced to remember those long hot nights on the train, the stupid games and parties, and - the main reason she left that summer in the dust - a certain boy.