When ex-FBI Agent Patrick Henderson reports a mysterious 'X-Ray Sierra India' incident, confusion ripples up the chain of command until Special Agent Kimberley Reynolds takes the call. Her investigation promptly leads her to snow-entombed Northern Wisconsin, where half a town has vanished beneath a tornado's wrath. With Henderson missing and the snowstorm ratcheting up, Reynolds is isolated in this eerie ghost town. The community buzzes with bizarre reports and vanishing evidence, emphasizing something otherworldly at play. Reynolds' hunt digs into a frigid past, unveiling an accursed expedition and a lingering horror that claws from history's shadows into the pulsing terror of the present.