A Christmas vacation turns into a nightmare for a teenager and her family when they discover an ancient menace that stalks their island getaway.

Hoping to reconnect over Christmas, a family of four travels to a remote island in the Danish archipelago, only to find it controlled by members of a strongly religious community living in balance with fierce creatures in the woods revealed to be - elves. Real, monstrous beings that inspired the folklore and myths we all know. When the girl in the family finds and brings home a baby elf, she inadvertently disrupts the balance and throws everyone on the island into a life-or-death battle for faith, family, and pure survival.