Knock at the Cabin

The little Wenling "Wen" is collecting grasshoppers in a jar in the woods when a stranger approaches to help her. He says that his name is Leonard and the girl tells him that she is spending vacation with her fathers in a cabin. When she sees three others armed people, she runs to the cabin and tells her gay fathers Eric and Andrew that they are in danger, and they lock themselves in the isolated cabin that is easily invaded by the strangers. Eric and Andrew believe they are bigot people, but they introduce themselves: Leonard is a schoolteacher; Sabrina is a nurse; Redmond is a bartender; and Adriane is a cook. They explain that all of them have the same visions about the end of the world and learn that the only way to stop the Apocalypse is if Eric, Andrew or Wen commit a sacrifice, one of them dying to save the world. Eric and Andrew believe they are insane or members of a cult, but soon they learn that weird climatic events are happening around the world. What do they do?