In a world ravaged by overpopulation, the government introduces a revolutionary solution: an enzyme implanted in citizens' DNA that regulates their bodily functions according to the sun or night, dividing society into daywalkers and night dwellers.
By Day and by Night
In a crowded world, a unique solution emerges: humans are programmed to be active only during daylight or night, resulting in a society where people are awake and interact with each other for only half the day.
