This time out, after American Ninja (1985) and Avenging Force (1986), globetrotting army hardbodies Michael Dudikoff and Steve James arrive on a small Caribbean island to investigate the disappearance of four US Marines. It turns out that a local drug kingpin is kidnaping soldiers and others to turn them into genetically reengineered ninja assassins who will do his bidding worldwide.
All this merely provides an excuse for an ample number of martial arts showdowns between the heroes and the black-robed baddies who swarm from all directions only to be dispatched in tidy fashion by the good guys.
Script by actors Gary Conway (who plays the narcotics overlord) and James Booth trades heavily upon the notion of Americans inherent mental and physical superiority to native warriors, who are a dime a dozen, but in such a comic way that the viewer can laugh with it rather than at it.
Pic was lensed in South Africa, and is extremely picturesque despite the modest means.