Liu Jin-xi is a village craftsman whose quiet life is irrevocably shattered by the arrival of two notorious gangsters in the local general store. When Liu single-handedly saves the shopkeeper's life, he comes under investigation by detective Xu Bai-jiu. Convinced that Liu's martial arts mastery belies a hidden history of training by one of the region's vicious clans, Xu doggedly pursues the shy hero-and draws the attention of China's criminal underworld in the process.