This documentary, presented by Jago Cooper, explores the ancient civilizations of Costa Rica, particularly focusing on the "Chiriquí" period (roughly 800-1500 AD). It investigates the rise and fall of these societies, their unique art and architecture, their relationship with the challenging natural environment, and the influences that shaped their culture, primarily from the Maya to the north and Andean cultures to the south. The video highlights key sites like Rebas, Las Mercedes, Guayabo, and Las Mercedes, examining their structures, artifacts (especially gold and jade), and the social and political hierarchies that once existed.