Yim Wing Chun is a young lady in charge of a family tofu shop in a mountain village with her father, sister and aunt. After local bullies tried to forcefully marry her during her youth, she trained to become a talented ''kung fu'' practitioner to fend off bad men lusting after her beauty, but her new prowess ends up scaring away any suitors to the chagrin of her father. She is the only person out of all the villagers who will stand up to the local bandits, led by two nefarious bandit brothers nicknamed the "Flying Chimpanzee" and "Flying Monkey". One day, a young and beautiful widow named Charmy comes to town, catching the eyes of the predatory Flying Monkey. Wing-Chun rescues the hapless widow and gives her a job in her family shop, earning the enmity of Flying Monkey.