Xu Cheng, a traditional Bajiquan heir, advances in the "Zhenwu Fighting Championship" but is seriously injured by American fighter Jason. His brother, Xu Shi, who had been pursuing academics, steps up to carry on the family tradition. Xu Shi uncovers that Xu Cheng's injury was part of a scheme by the championship's chairman, Ma Yuanlong, who used the event for illegal betting and drug abuse. With the help of his senior martial sister Lin Wan, Xu Shi enters the competition to investigate the truth. As they confront family histories, Xu Shi remains committed to preserving Bajiquan, fighting for both family honor and the future of the martial art.