"Eleni is the kind of person who's always had a BFF--an automatic, guaranteed by-her-side person--at home, at school, and at camp. And since before she was even born, her very best friend has been Sylvie Bank. But when Sylvie's end-of-summer birthday party becomes the end of their friendship, Eleni can't picture starting middle school without her BFF by her side"--Provided by publisher.