A Force of No Equal

In order to get our planet, they had to get rid of us.
Three waves decimated the earth. In the First Wave: Snow Day, they came with the snow to destroy as many of us as possible. During the Second Wave: A Trip to the Zoo, they took over our government, our armies and our own bodies. And finally, in the Final Wave: A Hike in the Mountains, one of the last members of the human race tries to run for a place to hide and wait out the invasion, only to find that there is literally no place on earth left to run.