More bone crunching martial arse hi jinks here, full of bad dubbing, questionable antics, and bad wigs. Grrr. I'll get you! Some champion challenges another champion to a fight on a beach (I'll get you!), causing the other guy to kill himself. This guy's son goes nuts (I'll get you!) but the losing champion makes the winning champion promise that he'll look after his son and also take down some Manchurian spies who also happen to be champion fighters, so now the winning champion has to raise this guy and teach his kung fu in order for the losing champion's son to grow up strong and kill him. Makes sense so far, eh?
So the champion guys also gets hired to kill a guy who turns out to be the guy he was going to kill anyway, plus the guy that hired him was wearing a mask so we'll have to wait to find out who he was. He's also training this young guy to kill him, which seems to involve killing a dog (for real? Who knows in these films) because kindness is not allowed or something, and now and again rescuing this girl from a life of prostitution.
While story wise this is kind of boring jazz (not to mention confusing, as it seems to me a bunch of innocent people were beaten up and killed), there's plenty of martial arse battles to watch. For some reason the version I watched was split into two separate parts. It's okay, don't sweat it if you don't see it.