Sister Street Fighter (1974): Martial arts expert Koryu Lee (Tina Long in the dubbed version) is the sister of a missing undercover cop who was trying to bring down a brutal drug lord. Pressed into service by the cops, Karen travels to Hong Kong to find her brother, but things take a terrible turn and she is left with the task of finding her brother and taking down a huge drug lord on her own!

Sister Street Fighter: Hanging By A Thread (1974): The daughter of a powerful man, Birei, disappears and Kaoru is sent to Tokyo to investigate. She soon discovers that Birei was kidnapped in a gangster's diamond smuggling ring that is very close to home. Soon she is surround by the gangster's army of martial arts experts who will stop at nothing to stop her!