A mysterious group kidnap a girl's sister. Years later, the group reappears and she is determined to get her sister back.

In an attack on the heir to a style of karate in order to steal a coveted belt, and its glory, a band of mercenaries and its mastermind kill the said man. Assuming one daughter dead, they carry off and kidnap the younger sister. The sisters are reunited and pitted against each other ten years later - and each could be a deadly karate weapon.—aghaemi