Hurricane Helene barrels north into Appalachia, dumping 30 inches of rain. As hundreds of cameras capture massive flooding and mudslides, one woman gets swept away by the deluge, until a man attending a wedding rehearsal jumps into the water to save her.

During Christmas in 2023, severe storms unleashed an unseasonal tornado outbreak across Tennessee. As dozens of eyewitnesses capture the unbelievable, destructive power of nature, a twister strikes an electrical substation, triggering a massive explosion.