Frame rate---------23 frames/second
Tu Tin Tao (Chen Kuan Tai) is master of the well-to-do Tiger clan. When the evil enemies of the Tiger clan murder Tu Tin Tao’s wife, and amputate his son’s arms, Tu Tin Tao goes mad. He starts training his son, Hai Chen in Tiger Kung Fu, and has a blacksmith forge a set of steel arms that they graft onto the kid’s arms. The years pass by and his son has fully grown into a powerful warrior, played by Lu Feng. Hai Chen has mastered Tiger Kung Fu--he is a walking death machine with a chip on his shoulder to match his bruised psyche. A loyal Tiger clan servant named Mr. Wan (Lung Wei Wang) rounds up the offspring of the enemies who attacked Tu Tin Tao’s wife and child years ago. Hai Chen gets his revenge by using the retracting blades in his metal arms to kill them.
Lo Meng plays a loose-lipped blacksmith who dares to speak up against the tyranny of Tu Tin Tao. When he confronts Tu Tin Tao on the matter, the Dragon clan members force a liquid down his throat, which renders him mute, and then they rupture his eardrums. Phil Kwok portrays a traveler who voices his support of the blacksmith, so Hai Chen uses his rigged steel claws to gouge out the eyes of the traveler. Another town resident played by Sun Chien accidentally bumps into the man with the steel hands. Tu Tin Tao orders his men to cut off the guy’s legs! These three men harbor hatred for Tu Tin Tao and the Tiger clan, and quickly become friends. Chiang Sheng is a righteous martial artist named Wang, who meets the crippled threesome, and goes to complain to Tu Tin Tao about it. The cripples beg him not to go face the Tiger clan, but you know how headstrong these types are. The disciples of Tu Tin Tao beat the tar out of the young martial artist, and torture him by crushing his head with a strap. Wang gets brain damage from the experience, which gives him the mental capacity of a three year old.
The crippled trio now becomes a foursome. Inside Wang\'s clothing, the cripples find a note containing the whereabouts of his Kung Fu master. They head off into the hills of China and deliver the tragic Wang into the hands of his master. Seeing the injustices committed to these men, the wise old master offers to teach these men Kung Fu so they can revenge themselves upon Tu Tin Tao. What follows are the some of the quickest training scenes in the history of Kung Fu cinema. The master trains each cripple to use their remaining senses to enhance their fighting capabilities. In what seems like to span of weeks, the blacksmith overcomes his deaf-mute status to become a lethal fighting machine. The blind man uses enhanced hearing, touching, and smelling capabilities to compensate for his blindness. The deaf blacksmith forges legs of steel for the amputee, very similar to the steel appendages of Tu Tin Tao’s son. Wang looks on the whole time, laughing like a little kid.
When the crippled avengers have each mastered their new abilities, they return to town to begin their mission of revenge. They first encounter Wei and some Tiger clan soldiers. Wei engages his blind opponent, expecting an easy victory. After the blind man levels the soldiers and shows Wei his new found skills, Wei retreats for more back up. Tu Tin Tao is amazed upon hearing that these crippled fighters have returned to town. He sends his soldiers along with Wei to kill them. But the blind man and deaf man fight hard and furious, until only Wei is left, and again he retreats because the odds are against him. Next, Tu Tin Tao sends his mammoth fighter called Chu to deal with the cripples. Chu is monstrously muscular, and has impenetrable skin. Chu laughs off the blind man’s attempts to stop him, and even the deaf blacksmith (the strongest member of the group) is unable to harm him. That’s when Iron Boot steps forward with his steel legs (which under clothing are unrecognizable). Chu scoffs and allows his smaller opponent to attack—big mistake because Iron Boot disembowels Chu with one kick! Wang, the blind man, the deaf man, and Iron Boot step forward into the home of the Tiger clan, taking down soldiers along the way. Tu Tin Tao gathers up his team for the big showdown—Himself, the steel-clawed Hai Chen, and Wei prepare to challenge the skills of the crippled avengers!