Celie and her family have moved an hour away from her school and her friends, and the changes don't stop there. At her new school, Celie encounters harder homework and struggles to make friends. She's torn between energetic and intriguing Mary Majors Meade and sweet but shy Charlie Larken, two classmates who do not get along. On top of adjusting to her new school, Celie deals with changes at home when her forgetful Granny and a home nurse move into her family's apartment. When misunderstandings lead to a falling out between Celie's older sister Jo and her boyfriend, Celie is determined to make it right. However, her choices lead to a dangerous situation. Will Celie be able to handle all these new changes in her life?

Once more Celie turns to her diary, filling the pages with heartfelt and often humorous entries, notes, drawings, and pages from her top-secret spy notebook.