Summary:
Twenty years ago, Takeda Guoquan secretly saw that his father presented a scroll to his junior brother Gangzheng. Guoquan believed that the scroll was "secret martial arts". Later, Gangzheng was expelled from the teacher's gate and broke off with the karate world. One day, a new immigrant Xiaoyue was bullied, the quasi-Olympic karate player Zhuang Hui shot, and the gangster Zhihao was caught up in it. Just passing by to stop the fighting, a crowd of people went to the police station.
