A very disturbing story about a family of four that has their vacation home invaded by a sick and twisted man who forces them to make choices related to incest.
The meat is in the middle, beginning and end just provide context to the story.
An ancient alien race comes to earth intent on the subjugation of the dominant species on the planet, humans! They were a race of symbiotic organisms, they fed off the sexual energy of their hosts. Is earth doomed? How long does humanity have? Can they be stopped? Will anyone even try?