In the turbulent times of the late Qing Dynasty and early Republic of China, the bandit Lei Hu wanted to rob Longmen Town. Long Yitiao, the chief escort of Longwei Escort Agency, led the villagers to resist. Long Yitiao first invited various masters to get rid of Lei Hu, but none of them succeeded. Long Yitiao decided to sacrifice himself and die with Lei Hu. However, this move helped him practice the family-inherited Thunderbolt Fist, which killed Lei Hu and upheld justice.