This is a Good Old Chuck at his best, Norris Movie. Plot simple, yet enjoyably ridiculous none the Less! Cops Killed in a strange way, leads cops to check out Karate as possible means of Killing, Chuck hired to teach cops Karate so they can defend themselves, Chuck does some of his own sleuthing, his adopted Son gets Killed, Chuck now out for revenge!!! Chuck finds drug smuggling in the Karate World, turns out his Title fight opponent Sparks (Bill Wallace) is the Killer, and head drug runner, finale fight to the Death match between Chuck and Sparks ensues. This is one of the Best and most believable, of the Chuck Movies in my opinion! I love Chuck Norris and his Movies, even if a little Daft and Dated now. He was after all one of the early action Hero's, and the first proper Western Martial Arts Actor! He alone paved the way for the rest, this alone makes him and his Career special. This Movie also Stars good old Bill Super Foot Wallace!!! This only adds to its Fun and class of this Movie Madness. As for the Blu ray, excellent picture and sound quality for a Movie of this age! I also heard, when Chuck is with a Lady, he doesn't need to get Hard, instead She gets soft!