Fighting master An Yuhuan was involved in a dispute between gangsters because of the accidental loss of a mysterious box. The bloodthirsty gangster killer started a desperate chase with him. In order to save his sister who depended on him for life, An Yuhuan fought against hundreds of people with his bare hands and bet his life on the fight to the death with the gangster boss. This time, An Yuhuan decided to use his fists to seek the purest justice and fight for justice!