Meteorite hunters and planetary scientists lead the way across Argentina, Chile, and Colombia, tracing what happens when space rock meets Earth. The trail starts at Campo del Cielo, an Argentine crater field left by an iron meteorite strike, and moves through the Atacama Desert, where the dry climate has preserved fallen meteorites for thousands of years and turned the region into a magnet for collectors and researchers alike. Scientists interviewed on location explain how these rocks are dated and analyzed, and what their mineral content suggests about the early solar system, including the idea that meteorites may have seeded Earth with the organic compounds life needed to get started. The film balances that origin-of-life angle against the destructive side of the same phenomenon, using Campo del Cielo's blast scars as a stand-in for the impacts capable of wiping out species. Interviews with the people who spend their careers combing deserts for these objects give the science a human, on-the-ground feel rather than a purely studio-bound lecture.