One day in June, two young people apply for a job in a mysterious building on the "billionaire's row" of 57th Street in New York City. Unlike the other skyscrapers on the street, 211A West 57th is a self-contained universe built for single family, who are unknown to most of its inhabitants. There are schools, farms, restaurants, libraries, theaters, a hospital, industries, high, middle and low-income apartments, laboratories, gyms, markets, chapels,...