Chokugeki! Jigoku ken

This film starts out with an older guy and a young (and very attractive) lady recruiting three karate experts to take on a dope ring. Sonny's character was trained in the ninja arts, but has fallen on hard financial time. One of his cohorts is an ex-cop who is now a hit man and the other is a sleaze ball who Sonny has to break out of prison. After some cheap attempts to develop the plot and Sonny kicking ass, they go after the syndicate head while he's having some kind of party.

It's a little weak on the plot and there's way too much of the sleazy guy trying (in vain) to hook up with women, but it does have some pretty cool karate action. Sonny and the ex-cop banter back and forth, which gets a little annoying after a while. The sleazy guy doesn't really do much, except for shamelessly hitting on women (his character didn't advance the plot a whole lot), and some of the other karate experts were unremarkable.

Recommended only to true blue Chiba fans.