At a remote US ice station in Antarctica, a team of scientists has made an amazing discovery. They found something unbelievable buried deep below the surface - trapped inside a layer of ice 400 million years old. Something made of metal...something which shouldn't be there...it's the discovery of a lifetime, a discovery of immeasurable value. And a discovery men will kill for. Led by the enigmatic Lieutenant Shane Schofield, a crack team of US Marines is rushed to the ice station to secure this bizarre discovery for their nation. Meanwhile other countries have developed the same ideas, and are ready to pursue it swiftly and ruthlessly. Fortunately, Schofield's men are a tough unit, all set to follow their leader into hell.