In the city of high martial arts, the strong are respected. Chen Yan was born in a low-class family, with no inheritance and no adventures. All he had was an almost paranoid concentration and a bravery to face death. He practiced the basic skills to the extreme and tore apart all opponents in actual combat. From the underground boxing ring to dangerous places around the world, from a martial artist to a human martial sage, he created his own brilliant martial arts with just a pair of iron fists!