There's a new girl in town and not everyone is happy about it. When Chloe Jennifer moves to Wish Pond Road, Mallory's friendship with Mary Ann is turned upside down. Mary Ann starts including Chloe Jennifer in everything that Mallory and Mary Ann do - and in Mallory's opinion, three's a crowd! How can she and Mary Ann still be best friends when there's another person getting in the way? Can Mallory save her friendship with Mary Ann ... and give Chloe Jennifer a chance?