As the Barret family's peaceful suburban life is rocked by an escalating series of disturbing events, they come to learn that a terrifying and deadly force is after them.

[first lines]
Title Card: Two possibilities exist... Either we are alone in the universe or we are not. Both are equally terrifying. - Arthur C. Clarke
Edwin Pollard: People think of aliens as these beings invading our planet in some great cataclysm, destroying monuments, stealing our natural resources. But it's not like that at all. The invasion already happened.
Lacy Barrett: What kind of animal eats all the lettuce but leaves the bacon?
Daniel Barrett: A rabbit. A very large rabbit with opposable thumbs.
[last lines]
Jesse Barrett: [over crackling walkie-talkie] Sammy!
Daniel Barrett: Look, officer, this wasn't a- a cooking mess. This was like a... like a mathematician's idea of a geometry joke. Ha, I don't know whether to be pissed or impressed.
Lacy Barrett: [seeing new house cameras] This isn't some kind of twisted way for you to spice up our sex life, is it?
Daniel Barrett: That wasn't the idea. But I like the way you think.