Earth, 2035. The world was suffering from a severe climate crisis due to global warming and environmental pollution. The planet was growing hotter by the day.

Nations across the globe destroyed the environment for their own gain. Despite warnings from numerous scientists and experts, governments did not stop their destructive actions.

And that became the catalyst for a great disaster.

In 2035, NASA officially announced the collapse of Earth's temperature system. This news spread through media outlets worldwide.

Temperatures began to plummet across the globe.

And an endless winter began.

The Great Ice Age that began in 2035 collapsed agriculture. As global energy and resource systems vanished, most of the population perished. Governments lost control and began to collapse one by one.

Major powers realized the severity too late and failed to implement countermeasures. Some governments declared martial law, and most were eventually taken over by their militaries.

Several years later, in 2040, Gangnam, South Korea.