The action and adventure of Percy Jackson meets the complex heroines of The Cruel Prince as a family of valkyries fight to stop Ragnarök. 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...