A few years ago a disease was discovered, it killed swiftly and brutally. It was passed through the air requiring gas masks on at all times. You took a test and it showed you were immune! You and a few others are immune to the disease and can develop the cure with your DNA but wait! Tragedy strikes and half of the immunes are killed and the rest being hunted by an organisation known as the Black Light. It is your job to escape them moving from lab to lab developing your cure. And if you get caught... well, you don't want to know what happens next.