Philadelphia teenager Edna Buxton wins a talent contest during the early rock 'n' roll era, changes her name to Denise Waverly and moves to New York City to make it big. Though she flops as a recording artist, fast-talking record producer Joel Millner recognizes her songwriting talent and teams her with struggling songsmith Howard Caszatt.

Nora, a single mother raising two teenage daughters, Shade and Trudi, waits tables at a truck-stop diner in a small New Mexico town. The beautiful and rebellious Trudi drops out of school and gets a job alongside Nora, while the younger Shade whittles away her time at Spanish movie matinees. Their lives are turned upside down when Trudi becomes pregnant and the girls' absent father returns.