It started off as just another tourist diving trip for Jack Hard, but instead he gets caught up in a global conspiracy. The infamous terrorist organization United Arms has discovered a new source of energy on the ocean floor. It is sure to change the world forever - but to what end? The terrorists are planning to use it in the construction of a weapon of mass destruction!

Fight your way through breathtaking firefights, claustrophobic hallways, gigantic train depots and secret laboratories and avert the global cataclysm. Don't forget: Millions of gallons of water weigh on your head down the ocean floor and every breath you take could be your last.