Mia Campbell-Richardson, 16, is ballsy, gorgeous and kind of a disaster. Unlike her brilliant sisters, academic Grace (19) and champion swimmer Audrey (13), middle child Mia has no idea what she wants to do with her life and is convinced of her status as the black sheep of the family. Struggling at school and unable to deal with her parents easy acceptance of perfect sister Grace's fall from grace - Mia goes into a tailspin, misguidedly seducing a man in his 40s and putting herself at risk on several occasions by drinking herself into oblivion. It is only the disappearance of her quiet and loving baby sister that is eventually able to bring Mia and Grace back together and help Mia see at last that she doesn't need it all to be about Mia to be happy.