In one day in December 2023, three supercells, nature's most violent storms, travel through Tennessee, triggering a rare winter tornado outbreak. Local news meteorologist Danielle and storm chaser Caleb broadcast warnings of potential disaster as the supercells unleash deadly twisters striking Clarksville and the surrounding areas of Nashville.

Wildfires are part of life in Australia, but in the summer of 2019 the country is drier and hotter than ever. In what becomes known as the Black Summer, 24 million hectares burn. Firefighters David and Matt take on a new species of fire, 19-year-old India battles to save her home, and the Royal Australian Navy carry out an unprecedented evacuation.

Fuelled by unusually hot water in the Gulf, a monster hurricane batters Florida. Storm chasers Max and Aaron document the incredible coastal storm surge, but as Hurricane Helene tears inland, it collides with the peaks of North Carolina, causing a one-in-a-thousand-year weather event impacting the Blue Ridge Mountains' communities forever.