The first season of Mortal Kombat Legacy is a prequel to the original game, explaining the background stories of several characters from the series and demonstrating their reasons for participating in the upcoming tenth Mortal Kombat tournament on which the first game was based.

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.