You have been sent to investigate a life form that has been detected on a long-dead planet. Passing through the deadly Cosmic Tunnel, you land on the barren planet's surface to find an underground world ruled by a race of intelligent Super-Bugs!

Countless numbers of these space age creepy-crawlies begin to emerge from massive subterranean colonies--along with the Phylax, genetically engineered Super-Drones that can penetrate any surface....