Watch Fist of Fury III

After Chen Shen avenges his brother’s death, he returns from Shenghia and promises his mother he will never fight again. Since then, he works with his other brother in his mother’s store. A sudden invasion of Japanese occupants turn Chen's peaceful world into a nightmare. They terrorize his mothers store, injure his brother in a brawl, and frame Chen for a murder that sends him to prison. Chen now must decide if he wishes to keep the promise to his mother or end the reign of terror once and for all.