Here's the story, if you can call it that: a cult of maniacs, whose motivation is not explained well at all, are going around killing people at random. One day Brigitte Nielson's character, a supermodel, sees the bad guys' faces and now they'll stop at nothing to kill her. (It's important to point out she never actually saw the bad guys committing a crime and thought nothing of the incident until after they targeted her.) Never mind the number of witnesses increases the more they try to kill her—they're not the brightest, these maniacs. By the end of the film, it's implied they have to murder an entire town of witnesses because their last ditch effort to take her out involves at least a dozen conspicuous motorcycles.
And I'm not complaining. If you're a filmmaker and your villains don't ride motorcycles, what the hell is wrong with you? (Double points if they're bike-riding ninjas.)
Stallone, who recycled ideas he had when he was attached to Beverly Hills Cop, has written a script which acts as a big fat soapbox for some extreme ideas about how crime should be handled in the United States. I'm sure all of the big action stars at the time shared similar stances, but Stallone's sincerity as he spouts this naive bullshit is a hilarious good time. Naturally, his script has the hot chick agreeing with him while all the strawman characters (Andrew Robinson in particular) oppose him.