La Paz sits higher than any other capital city on earth, with its poorest neighborhoods climbing above 4,000 meters while wealthier districts occupy the lower, more oxygen-rich basin, a social geography inverted from almost anywhere else. Host Alexandra, guided by locals Julia and Franz, moves through streets where a thousand-meter elevation change between top and bottom means every errand involves steep grades and long staircases, and where new arrivals feel their pulse pounding within minutes of landing. The film follows residents who have built entire lives around thin air: cholitas hauling goods up hillside markets, cable-car commuters gliding over the city's ravines, and families explaining how their bodies and habits have adjusted to conditions that leave outsiders gasping. Along the way it captures the practical adaptations of daily life at extreme altitude, from diet to work rhythms to the informal economy that keeps the upper city running. It is a portrait of a city shaped entirely by elevation, told through the people who have made survival there ordinary.