Winter world

A new ice age on Earth. A mysterious object in space. And a desperate mission to save humanity from extinction. Each month, Earth grows colder. Snow falls in summer. Glaciers trample cities across North America, Europe, and Asia. Chaos erupts. Around the world, people abandon their homes, fleeing the cold, flocking to regions where they can survive the new ice age. Nations prepare to go to war for the world's last habitable zones.