Gordon (Richard Harrison) is a ninja who discovers that his master (Edowan Bersma) owns an ancient sword which bestows great power. However, that doesn't stop the evil Black Ninja from killing the master and taking the sword! Gordon vows to avenge his master, first though he must warn the leader of the five ninja clans and warn them not to be killed by the Black Ninja else he will become unstoppable...
Meanwhile we also have a rather tedious older Taiwanese film starring Eagle Lee which has been added to pad the film out, clever editing giving the veneer of the characters of the two films interacting.
Unfortunately while some of the films of this type like Ninja Terminator actually end up being pretty good, Ninja Strike Force doesn't really work. The ninjas having headbands which have "ninja" written on them really doesn't scream quality and the older film is a bit boring. The modern ninja fighting footage is campy but fun making the film watchable but not much more.
