Best friends Lydia Goldblatt and Julie Graham-Chang are as ready as they'll ever be to start junior high. But before they can try out the lessons they've learned about friendship and popularity, tragedy strikes: Lydia's mom is moving her family to London for six months. Separated for the first time, each of the girls must face bullies, secrets, and the challenge of standing up for herself. With the help of their trusty notebook, they try to keep in touch and keep their spirits up, even while facing the strange and new.