Samantha has a secret. . . . It's hard enough being a thirteen year-old girl, but when your dad can't stop drinking and you're not allowed to tell, life gets even harder. Add to the mix a yoga-obsessed mother, a gym teacher who hates you, and boobs that won't stop growing, and you really need someone to talk to. When Sam picks a random high-school girl in the library and starts sending her notes asking for advice, a mysterious friendship develops. But who is A.J.K., really? And will she be able to help Sam help her father, before it's too late?