The Sun looks stable from Earth, but the film opens with the 1859 Carrington Event, when a solar storm sent telegraph systems into chaos, sparked fires, and lit the sky with auroras as far south as the Caribbean. Scientists and engineers explain what a storm of that size would do to a world running on satellites, GPS, and interconnected power grids, tracing the chain from a coronal mass ejection to transformers overloading and blackouts spreading across continents. The film walks through near-misses, including a 2012 storm that missed Earth by about a week, and the monitoring systems now watching the Sun for warning signs. Interviews with physicists and space-weather forecasters lay out how little lead time we would actually get and how much of the modern grid was built before anyone considered this threat seriously. The picture that emerges is of infrastructure that took a century to build and could take mere minutes to knock offline, with recovery measured in months rather than days.