Nellie O'Malley finally has a home again. She and her little sisters, Bridget and Jenny, are happily settling in with Samantha's family in New York City. Best of all, Uncle Gard and Aunt Cornelia want to adopt the girls. Now Nellie's best friend Samantha will be her sister, too, and Bridget and Jenny will be protected and cared for, just as Nellie had promised her mother. Then Uncle Mike shows up again and threatens to ruin everything-including Nellie's friendship with Samantha! Can Nellie find a way to keep her promise without losing her new family?