Three astronauts crash land on an Earth-like planet after returning from a 7-year long expedition to Ganymede. The planet however is populated by murderous psychopaths who kill two of the astronauts right away. The third, Roger Corman, flees to the alien countryside where he decides to begin a violent quest to find out the truth behind his mission.
Joe Enders is a gung-ho Marine assigned to protect a "windtalker" - one of several Navajo Indians who were used to relay messages during World War II because their spoken language was indecipherable to Japanese code breakers.
When a virus leaks from a top-secret facility, turning all resident researchers into ravenous zombies and their lab animals into mutated hounds from hell, the government sends in an elite military task force to contain the outbreak.