A dramatic reconstruction of the devastating April 2019 fire that swept through the medieval cathedral of Notre-Dame de Paris, destroying its spire and much of its roof. The film follows the firefighters, officials and volunteers who raced to combat the blaze and salvage irreplaceable artworks and relics over the course of a single catastrophic night. Drawing on real testimony and archive footage, it portrays both the chaos of the emergency response and the outpouring of grief from Parisians and people around the world who watched the iconic landmark burn.