There is something about two men fighting that always manages to draw a crowd, whether it's on a street corner or in a ring. This strange attraction to the spectacle of man acting on his most primal urge is as old as civilization itself, but fighting as a sport has always conflicted with the idea of a civil society.

Mixed Martial Arts (MMA) has grown into a billion dollar industry showcasing boxing as one of the most dominant combat sports in the world. But away from the lights of the show, men fight in low-rent arenas and gyms to test their mettle, empowered by the promise that an ordinary man can become a champion.