On the night of 15 October 1987, a storm with hurricane-force winds tore across southern England, the worst to hit Britain in three centuries. It killed 19 people, felled an estimated 15 million trees, and caused around £1 billion in damage, arriving hours after television forecasters had told viewers not to worry. The film rebuilds that night through reenactments and interviews with people who lived it: a woman in Kent who nearly gave birth in the road while trying to reach a hospital, and later named her baby Andrea Gail, and an engineer who made the calls that kept the national grid from collapsing under falling power lines and surging demand. Weather forecasters who missed the storm's severity explain what their data showed and why they got it wrong. The reenactments stay close to these firsthand accounts rather than dramatizing beyond them, so the destruction is measured through individual decisions made in the dark rather than through statistics alone.