Whitley's dream summer with her divorce dad has turned into a nightmare. She's just met his new fiancee and her kids. The fiancee's son? Whitley's one-night stand from graduation night. Just freakin' great. Worse, she totally doesn't fit in with her dad's perfect new country-club family. So Whitley acts out. She parties. Hard. So hard she doesn't even notice the good things right under her nose: a sweet little future stepsister who is just about the only person she's ever liked, a best friend (even though Whitley swears she doesn't "do" friends), and a smoking-hot guy who isn't her stepbrother.