A kung-fu student is instructed by his dying teacher to track down five of the teacher's ex-students. Each of the five is equipped with a lethal martial arts skill, and the teacher fears this might be used for evil purposes. However, not only does the teacher not know the identity of the students (who all wore masks under his training), but some of the students also don't know each other!
Crippled Avengers is a 1978 Shaw Brothers kung fu film directed by Chang Cheh and starring four members of the Venom Mob. It has been released in North America as Mortal Combat and Return of the 5 Deadly Venoms. The film follows a group of martial artists seeking revenge after being crippled by Tu Tin-To (Chen Kuan Tai), a martial arts master, and his son (Lu Feng).
Two groups of knife-wielding and kicking women in bikinis join forces to kill a gang boss responsible for killing their fathers. But they're not very effective. After three attacks on the culprit, the worst damage he suffered was having his ankle run over by a motorbike. Closer co-operation with a casino boss may help.