The China O'Brien films follow China O'Brien, a big-city police officer and martial arts expert who returns to her hometown to combat organized crime. She runs for sheriff, winning through confrontations that decide the town's fate. In the sequel, she faces a drug dealer who puts a bounty on her, using her martial arts skills to stay ahead. Both films feature strong female leads utilizing martial arts to fight crime. The first film has China confronting organized crime as sheriff, while the sequel has her battling a drug dealer. The series showcases women's strength in traditionally male roles, offering thrilling action and dramatic storylines.