After many years in an insane asylum a man returns to find that the village of his birth is gone and a massive, mysteriously empty factory has sprung up in its place.

A village is being oppressed by a four villains lead by chow chung until a beggar comes to town and teaches a young man and woman the 7 star grand mantis style of fighting. They stomp out the gangs businesses and then have to fight them to a finish.