The best female fighters in mixed martial arts battle it out in this exciting fourth edition of the "Revolution" series. The hard-hitting fights include the late Shelby Walker facing off against A.J. Jenkins and Angela Wilson in two separate matches. Other featured bouts include O.D.B. vs. Kelly Kobold, Tara LaRosa vs. Ginele Marquez and Julie Kedzie vs. Sasha Mirvic. A special tribute features a never-before-seen interview with Walker.