When Ali asks her mother about a mysterious picture she found in the attic, she begins to learn about something that happened in her mother's life that she just wants to forget. The missing child in the torn up picture haunts her as she takes a position as her aunt Dulcie's babysitter at the lakehouse her mother used to go to as a child. Slowly, Ali begins to put the pieces together to form a story about a child, Teresa Abbott, who drowned in the lake some 30 years ago as a child. Then Sissy, a mean child comes to into the lives of Ali and her cousin, Emma and they begin to find out the truth about what really happened that night.