When a meteorologist detects a fatal atmospheric anomaly, he warns that regular seasons are over—extreme heat and deadly freezes will soon alternate. Though skeptical, his family helps him stockpile supplies and fortify their home. When a blistering heatwave gives way to a minus-fifty-degree blizzard, the city collapses, leaving their home as the last sanctuary. But with chaos closing in, can their shelter withstand the escalating wrath of nature?
