The struggles and perseverance of ordinary people during a global extreme-cold disaster. In the utter frozen desolation, they hold on to the warmth of humanity and the hope of survival. An unprecedented coronal mass ejection, twelve times as powerful as the Carrington Event, pierces Earth’s magnetosphere and destroys power grids and communications worldwide. It also causes stratospheric temperatures to plunge. Within 72 hours, global temperatures fall from normal to minus 30°C; within a week, they drop below minus 60°C, eventually stabilizing between minus 70°C and minus 90°C. A frigid age lasting decades begins.
