Chung-kuei Chang

During the Ming Dynasty, as Japanese pirates wreak havoc along the Chinese coast, laying waste to entire towns, a band of ninjas start appearing and target the Chinese military commander, General Chi. The Master of the Three Arts (who possesses a book illustrating various ninja techniques) is the only one who can combat this new enemy, so he pledges that his students will join Chi's army in their fight to wipe out the killers.

Beggars are being killed left and right to get their old leader to come out of hiding and face an old enemy. Meanwhile, young Wu Han Wei is being instructed by his blind grandfather to learn all six styles of the Butterfly technique. But when an old crazy beggar befriends the young student, his fate turns out to be intertwined with that of the fearsome Lu Din, a man with no arms or legs.

A group of young undercover cops, who get in a little too deep, become hunted by the police themselves. Superb action: from Dick Wei and Kara Hui.