For seventeen-year-old Bryn, being the youngest, messiest, most rebellious sister in a family of valkyries isn't easy. Especially considering home is a Renaissance faire in Chicago full of costumed workers who see her as nothing more than a nuisance. When her mother disappears on a mission for Odin, Bryn begins having strange visions about the impending Ragnarök. Bryn senses their mother is in great danger, but her annoyingly perfect older sisters refuse to take her seriously. Determined to survive Ragnarök, Bryn, Juniper, and Wyatt team up to combat the horde of monsters that keeps appearing throughout the faire. But after Bryn ignores the call to deliver Wyatt to Odin's eternal warriors in Valhalla, choosing to save his life instead, she starts to wonder if she'll ever get this valkyrie thing right. Whispers of divine interference-including sightings of the mischievous Loki-reach Bryn's ears.