The world has been ravaged by vampires. A group of survivors band together to search for loved ones who may be alive, dead or something in between, eventually taking shelter in what may be the only safe hideout left to them. But well defended hideouts have a way of becoming prisons. And prisons aren't the safest place to be when your friends can turn on you at any time.

　　During the Christmas season, two sisters throw a house party, unaware that a deadly invader will be crashing the proceedings.

　　A cult kidnaps a young girl and sacrifices themselves by the locust moon. The girl awakes, surrounded by corpses. Years later, the locust moon rises again and the girl is captured by a surviving cult member, informing her demon is growing inside all these years.