Deep in the Vietnamese jungle in an abandoned strip mine, a crack team of special forces is sent to rescue a missing detachment of the blind, only to come up against a subhuman force. After brutally murdering Slate, the tough gurkha member of the team, and maiming Microchip, the group’s geeky operations strategist, the entity shows itself to be a terrifying science experiment shaped like a huge, grotesque version of a mollusc with a slime-filled mouth. The team’s fearless leader, Kodiak, quickly realizes that if he doesn’t stop the creature, no one will, and that perhaps this battle, in addition to saving the human race, will help him work through some of lingering emotional issues from his wife’s recent death.