meyer paints a vivid picture of the future, where Earth has become overpopulated and polluted. The wealthy elite want to separate themselves from the impoverished masses. To remedy this problem, the world's leaders have hired private companies to build four sectors in which people can live. People are assigned to a sector according to their financial income and political influence. Luna is a factory worker who lives in one of the poorest sectors. One night, she meets a mysterious woman who gives her access to the wealthiest sector. There, she unexpectedly falls in love with Alan, an accounting student with a passion for astronomy. The lovers must navigate family expectations, the authorities, and their conflicts. As tensions rise in the sector, Luna and Alan are forced to make impossible choices between love and safety.