Fresh off a breakup, Anna travels to Iceland and has an incredible one-night stand with a mysterious stranger. Upon arriving home, bizarre visions begin to consume her, urging her to return to Iceland. There, she learns her one-night stand— a man named Rorik—is actually a ghost. As the two search for answers, they uncover an ancient prophecy that tells of a primordial evil who will bring about the end of the world. Anna and Rorik are destined to stop it—or die trying.