Two thousand years of wear, earthquakes, and stone-robbing have left Rome's Colosseum in need of constant intervention, and this film follows the specialists trying to keep it standing. Archaeologists, engineers, and conservators walk through the arena floor, the underground passages once used to hoist animals and gladiators into view, and the upper tiers where erosion and pollution keep eating away at the travertine. The restoration work covers cleaning centuries of grime off the facade, shoring up sections weakened by old excavations, and using modern imaging to map cracks invisible to the naked eye. The film also brings in an unexpected angle: fashion and cultural events now staged at the site, and the debate over how much a monument built for blood sport should be opened up for modern spectacle. Interviews with the people responsible for the building's survival sit alongside footage of the repair work itself, scaffolding against ancient stone, laser scanners tracing worn arches, giving a practical, unglamorous picture of what it takes to keep a 2,000-year-old structure from falling down.