Fifteen-year-old Janie Johnson's life is turned upside down when she notices the picture of a missing girl on the back of a milk carton. A girl named Jennie Spring, with red hair much like her own, was kidnapped twelve years ago. Janie wonders if she could be this face on the milk carton when other questions about her own past begin to arise. Why has she never seen her own birth certificate? Are her parents not really her parents?

Janie tries to ignore these persistent thoughts, until she starts having strange memories. She remembers being left alone in a shopping mall, sitting on a stool, when a woman came up to her and offered her ice cream. She remembers spilling milk in a kitchen that was definitely not her own, surrounded by unfamiliar faces. She remembers a dog, and a prayer, and a family that is...