In the single player mission a meteor has crashed into the Earth. The largest single impact on the earth in a millennium is being investigated by the government at a special research facility (C.O.R.E) built alongside impact site. For 20 years the scientists have been drilling into the Earth trying to reach the centre of the meteor and unlock its secrets. Just recently a news blackout was declared for the site and rumours started of an incredible find. Suddenly all communication with the base was lost. With no information on what might have happened and a new strange radiation emanating from the site a special forces team is needed to investigate, your mission as part of that team is to find the answers.