Dramatization of the Starkweather-Fugate killing spree of the 1950's, in which a teenage girl and her twenty-something boyfriend slaughtered her entire family and several others in the Dakota badlands.

He was 25 years old. He combed his hair like James Dean. She was 15. She took music lessons and could twirl a baton. For a while they lived together in a tree house. In 1959, she watched while he killed a lot of people.