The Cabin at the End of the World

The plot of the cabin at the end of the world is very similar. There's a gay couple with their adopted daughter. They're on vacation for weirdos show up at the door with medieval weapons. You have to choose between the three of you, which one dies and one of you dying will prevent the apocalypse. And so they all kill each other. In the book, there is a little more ambiguity as to whether the end Of The World is happening or if it's just a really shitty day.