In Los Angeles, 1970, Katie Standon (Tarra Steele), a girl who has been imprisoned in her room (and without any human contact) since the age of one, is now thirteen years old. Her mother Louise (who has cataracts; Kim Darby), has taken enough abuse from her domineering husband Wes (Jack Betts); she gets her son, Billy (a few years older than Katie; Michael Azria), to help her and Katie escape their home.