As sisters, Katherine and Amy tell each other all their secrets ... except one. With divorce and infidelity hanging from nearly every branch of her family tree, Katherine sees no point in marriage. Boyfriends? Sure. Sex? Of course. Wedding vows? No, thanks. Still, when Amy gets engaged, Katherine gathers all the enthusiasm she can. She won't let Amy down — but as the sisters embark on wedding plans, Katherine's college love resurfaces.