Synopsis

Across the North American continent, a breathtaking spectacle unfolds as monarch butterflies embark on their extraordinary annual migration. NOVA ventures into this natural wonder, striving to capture the journey from the butterfly’s perspective. Employing helicopters, ultralights, and hot-air balloons, the filmmakers trace the butterflies' transcontinental route, offering unprecedented aerial views. This remarkable event, still largely a mystery to scientists, is now an endangered one. Its cont