It's Halloween eve on Shelter Island, and the small town is preparing for a killer storm. But the dark clouds gathering over the island are bringing with them a cure one-hundred year in waiting. As the woods give birth to an ungodly and inatiable creature of fire, bones, and earth, three sister must scramble to stay alive through the long dark night of the Hollow. For it's not something you can kill. It's only something you can try and survive.

imdb:tt4472596