A sport so dangerous it was once banned in the U.S., no-holds-barred fighting is undeniably the purest form of human competition. Simple in concept and savage in execution, it is the definitive test of survival: one ring, two fighters, and no rules. In this exciting, graphic documentary, the camera takes an unflinching look at the world of extreme fighting through the eyes of the sport's top fighters, including Mark "The Smashing Machine" Kerr, a modern-day gladiator who became an overnight sensation when he claimed championships in Brazil, Japan, and The United States.
The number one ranked fighter in the world, Mark Kerr's success has brought him money, international fame, and a full-blown addiction to painkillers. As he navigates his way through a never-ending struggle with drugs and dysfunction, he attempts to remain on top of a sport that is growing and evolving at a furious rate. Along the way, Kerr comes up against Mark "The Hammer" Coleman, his mentor and former UFC Champion, and inventor of his own brutal style of fighting known as the "ground and pound." Once the most feared man in the world of no-holds-barred fighting, Coleman is determined to make a comeback and regain what was once his, even if he has to go through his friend and former protégé to do so.