When five-year-old Lexie Saunders learns she is adopted and is told she is handpicked by Mother from a line-up of baby cribs, her life is forever changed. Instead of feeling special, Lexie becomes haunted by "Mama," the mystery lady who gave birth to her.

The disappearance of Mama leaves a hole in Lexie's heart, keeping her separate and feeling different from others. She often experiences acute loneliness even in the midst of a crowd of friends or family. Were she to learn the reason for her adoption, perhaps she would feel complete. However, searching for Mama means a possible rejection plus it might devastate the mother who has raised her.

Lexie, Mama, and Mother have each suffered greatly: one the loss of a mother, one the loss of a child, and one the loss of fertility. Together in the adoption triad, they are like the notes of a musical chord, inextricably intertwined for better or worse.

In recognition of her adopted grandparents' and aunt's unconditional love, Lexie will eventually gain the courage to search for answers plaguing her over a lifetime. Will they bring closure or open old wounds?