Long ago, the Inhumanoids (Metlar, Tendril and D'Compose) were defeated by the Mutores (Granites, Redwoods and Magnakor), who imprisoned them under the Earth's crust until unsuspecting humans dig them up, again unleashing their evil. D' Compose is a rotten, gangling zombie with the ability to spread undeath by touch. Tendril is a crawling, devouring horror with the tentacled maw of Cthulhu. Metlar is the alpha male demon, hellish King of his elder minions. Now, a team of scientists (Armstrong, Bright, Auger and Liquidator) called Earth Corps teams up with the Mutores to take on the Inhumanoids and stop their plans to destroy the planet.