When a group of international terrorists releases Dr. Raymond Barr from a hospital for the criminally insane, the Penetrator springs into action. Dr. Barr, aside from being insane, is a brilliant scientist—a very dangerous combination. With the mad doctor on the loose, no one is safe.
Taken by his rescuers to a secret laboratory in Nicaragua, the doctor’s twisted talents are employed by Colonel Po Hahn Chau, who is breeding new strains of abnormally large, highly-aggressive insects. The colonel’s plan is to develop an insect army, a living weapon which could bring the world to its knees.
The Penetrator has to smash this plot before the colonel’s plague is loosed on the world—and before he becomes the swarm’s first victim.