A photographer holds a photo-shoot with a new client, both with their own dark secrets.

"It Lives in a Cave in the Woods," tells the story of a young woman, Mable, who discovers that the monsters from childhood fairytales pale in comparison to the ones inside us. Mable lives on her father's farm with her mother and younger sister. After her father leaves mysteriously, Mable ponders a folktale he used to tell her as a child about a beast that lives in a cave in the woods. As memories of her father haunt her and tensions rise between her and her mother, defiance and curiosity grows inside of Mable until she stumbles upon an answer she wishes she hadn't.

A teenage girl embarks on a journey with her loved ones as every night, the world's population cuts in half, counting down to zero.