Robbie Cordwood went to jail for killing the three men who raped his wife. He expected to stay there and not get out. That was fine by him. Justice served. But one day the world changed, and THEY came from the stars. Then THEY started taking over peoples bodies, crawling in through the mouth. The prison doors were open, and no one knew what to do next....
He was a little boy when they came. He couldn't remember much before it all changed. All he knew were the concentration camps, and the loudspeakers that spoke every day, saying, "We are here because we love you. Your planet will become a paradise."
If that was the case, then why were the weak eaten in the dark?
Parasitic aliens turn people into puppets. The Americans fight back. It does not go well.