In the chaotic period of the late Qing Dynasty and early Republican era, the bandit Lei Hu planned to plunder Longmen Town. Long Yitiao, the head of Longwei Escort Agency, led the townspeople in resistance. Long Yitiao first invited various martial arts experts to eliminate Lei Hu, but none succeeded. Long Yitiao decided to sacrifice himself and perish together with Lei Hu. However, this act unintentionally cultivated the ancestral technique of the Thunderbolt Divine Fist, and he killed Lei Hu, upholding justice....

After learning martial arts, Fong Sai-yuk comes back to Zhaoqing and gets immediately involved in a corruption case. The Governor of Nine Gates is ordered to lead a squad to kill witnesses and destroy the evidence. Fong Sai-yuk’s friends are killed, and his parents are arrested. Faced with such challenges, he and Lui Ting-ting decide to fight against the villains with all they’ve got....