Elusive salvation

The Arctic Circle, 1845: Escaping the tyranny under which their people have lived for generations, aliens from a distant planet crash land on Earth's inhospitable frozen wastes. Surviving the harsh conditions will pose a challenge, but over time the aliens will migrate to more populated areas, with decades passing as they work to conceal their presence from their former oppressors, who continue to hunt them at any cost. San Francisco, 2283: When...