Creative, intelligent, nine-year-old Mina keeps a journal in her own disorderly way that reveals how her mind is growing into something extraordinary, especially after she begins homeschooling under the direction of her widowed mother.

Two possible futures face Summer: either she will spend the summer in Provence with her father, uncovering family secrets, and exploring the old world, or she will stay in upstate New York, coping with her mother, and dreaming of her long time crush--and which future unfolds will depend on whether or not she answers a phone call.