{Mo Chen} was forged by a mysterious organization into a ruthless killer since he was a child, practicing weird martial arts techniques. During a mission, he became a traitor and was hunted down by the organization because he refused to massacre innocent people. In desperate situation, he fled to the prosperous city and kept his name anonymous, but unexpectedly met the kind-hearted girl Su Qing. His frozen conscience was awakened, and he used dark martial arts as a blade to secretly eradicate evil forces in the city. He acted somewhere between good and evil - he was not accepted by the upright martial arts world, and was stalked by the old organization. In the battle of blood and fire, Mo Chen sticks to the bottom line, protecting the people around him while tracing the truth of the organization, and finally overturns the dark haze shrouding the city in the name of "Martial Demon".
