After pollution has reached toxic levels and the world's only nuclear reactor left melted down, society is on the brink. Governments try to provide survivors with supplies, but often cannot - people are dying too quickly.
Then the new technology arrives. Small, white chips programs to keep the human body alive. People's bodies are too damaged to survive on their own - they need these chips. The chips last for one hundred days - they give people one hundred days of life.
One hundred days before they must get a new chip.
The chips tell you how well they're working. They will turn either, blue, green, or red. Every one hundred days or so, if the new shipment of chips don't arrive, people start dying.
Blue means life. Red means twenty-four hours to live.