Fifteen-year-old Kathy, a lover of heavy metal music, outlandish clothes, and unorthodox behavior, suddenly finds herself sharing a bedroom with her more traditional, "perfect" cousin Deena, who takes it upon herself to correct and improve Kathy's lifestyle.

Kathy's unsatisfactory grades and poor attitude lead the guidance counselor to insist she participate in an extracurricular activity, and when Kathy tries out for a school production of "The Sound of Music" she is not pleased to see that cousin Deena is trying for the same part.Kathy's unsatisfactory grades and poor attitude lead the guidance counselor to insist she participate in an extracurricular activity and when Kathy tries out for a school production of "The Sound of Music" she is not pleased to see cousin Deena is tryingfor the same part

Fifteen-year-old Deena is faced with two problems during summer keeping her reluctant cousin, Kathy, interested in the playgroup they run at the family inn, and evading the attention of a new boy she considers a nerd