Far I the future…an urgent distress signal is received from a classified Union Aerospace Corporation research facility based on Olduvai. Mars--and is suddenly silenced. Assigned to either contain or quarantine the mysterious threat, a crack stirke team comprised of the nost hard-bitten marines around belives that this will be another routine seek-and-destroy mission. But they will soon come face-to-face with the hellish nightmares that the researchers' unorthodox experiments have unleashed on Olduvai--a place where doom is waiting…