Seventeen-year-olds Lizzie, Ella, and Betsy Best are clones, raised as identical triplets by their surrogate mother but living as her one daughter, Elizabeth, until their separate abilities and a romantic relationship force a change.

Sixteen-year-old Emma Healy has never felt that she fit in with the rest of her family, so when she discovers that she had a twin brother who died shortly after they were born, she takes off on an impulsive road trip to try to discover who she really is.

The struggle of three brothers to stay together after their parent's death and their quest for identity among the conflicting values of their adolescent society.