Katia and Maurice Krafft were two passionate volcanologists who traveled the world to get as close as possible to and film active volcanoes. Their groundbreaking footage of eruptions and their aftermath is simply stunning. Legendary documentary filmmaker Werner Herzog combines these spectacular images with their unpretentious home videos, compelling operatic music and his quiet commentary in a visually breathtaking collage. A mesmerizing, terrifying and wonderful meditation on the immeasurable power of nature and the fiery passion of an extraordinary couple.