It's a FPS/RPG in which you are the chief of security for a large, futuristic Biotech firm. A terrorist group attacks the company, and you're killed in the attack. However, the company revives you, using it as an opportunity to try out some experimental human augmentations. So you go through the game, trying to find out what happened, and unraveling a greater conspiracy, while upgrading your augmentations to give you better skill with weapons, stealth, hacking, etc.