Humans are few and far between since Earth was invaded by unseen extra-terrestrial machines that harvest the planet's natural resources and relentlessly kill its inhabitants. In a remote part of the countryside, where starved humans have become as dangerous as the alien machines hovering in the sky, a feisty 19 year old girl, Sarah, sets out on a desperate attempt to fight back a group of bandits and defend her parents' farm, their remaining livestock, and the solar panels that keep them safe from extra-terrestrials. If she doesn't succeed, she will lose her only source of food and shelter; but if she resists, she and her helpless blind sibling will be killed. And if the mysterious intruder dressed like a soldier who claims he can help them turns out to be a liar, then the enemy may already be in the house.