Earth was under attack and people began to prepare for a life underground with the possibility of a nuclear war turning the surface uninhabitable. But the real attack was a surprise, sending the Earth into a new Ice Age, as alien ships firebombed the Earth's surface, making it uninhabitable.

Miners, their friends, and families had made a home in their underground mine, aiming to be self-sufficient until the surface temperature was bearable again. It took forty-five years for this to happen when a new generation of survivors first went out to scavenge.

When they did, a new enemy stood between them and survival...