The Sword Identity

In the Southern city of China, during the Ming Dynasty, there lived four families. These families were faithful keepers of martial arts. Anyone who wants to establish a new form or technique of kung fu has to fight their way through the families' gates.

However when Liang requests a competition, he is rejected for his strange new weapon mistaken for a Japanese sword. He then determines to prove that his sword is invincible through a series of fights.