Plot: Fang Yihuo is a mixed martial arts champion who has thrived on his career in the ring. However, when he refuses to throw a fight, he faces the wrath of local mob boss King. When King sets Yihuo up and has him sent to prison, Yihuo’s brother Yishui sets a plan to seek revenge. It all starts with infiltrating King’s organization through King’s girlfriend, who takes a liking to Yishui. When Yishui proves himself to be a force to be reckoned with, King is impressed with Yishui’s skills in his underground fight club.