One street runs the length of Manhattan and into the Bronx, and Alex Gibney uses it as a spine to measure the distance between the richest Americans and everyone else. At the Manhattan end sits 740 Park Avenue, a building whose residents have controlled a share of the country's wealth that keeps growing; a few miles north, the Bronx stretch of the same avenue holds one of the poorest congressional districts in the nation. Gibney interviews economists including Joseph Stiglitz, lobbyists, financiers, and residents from both ends of the street, tracing how tax policy, deregulation, and campaign financing built the gap and kept widening it through the 2008 financial crisis and its aftermath. Doormen, security staff, and building employees describe working inside the wealth they will never share. The film moves between boardrooms and housing projects without pretending they are two separate stories, arguing they are cause and effect on the same avenue. It ends with the numbers, not a slogan: how much has shifted upward, and how fast.