You wake up in a windowless room, with nothing but moss and dew to get by on. Unable to escape, your senses heighten exponentially in order for you to survive. And survival's the goal, you've been kidnapped and are being conditioned into the life of an assassin, so it's either kill or be killed, eat or be eaten. You'll have to be sadistic and unfeeling to survive. They're hundreds of other like you in this place, so once you move to the second stage, form a team, or forge ahead alone.