Joan Jett and Cherie Currie, two rebellious teenagers from Southern California, become the frontwomen for The Runaways -- the now-legendary group that paved the way for future generations of female rockers. Under the Svengali-like influence of impresario Kim Fowley, the band becomes a huge success.

When an uptight young man and his fiancée move into his libertine mother's house, the resulting clash of life attitudes shakes everyone up.