Ma Gangzheng learned karate when he was young, and was appreciated by Master, but it also caused the envy of his fellow brother Wu Tian Guoquan. With the death of Master, Gang Zheng was also expelled from his teacher by the Brother, and the disheartened Gang Gang was insulated from karate from then on. On a certain day, Xiao Yue, a new immigrant female student, was bullied in the street, and happened to be passing by as well as the karate player Zhuang Hui who was preparing for the Tokyo Olympics.