You are just chilling in your house lounging about on the couch when an emergency broadcast interrupts your tv show talking about how the city has been infested by parasites that have taken over the city and are trying to trick people into letting them into their house. The news reporters frantic voice explains how the parasite will proceed to make a nest and cocoon anyone within the household to either turn them or eat them and suggests to board up the windows and block the doors and pray that this will be all over.