Ailsa finds herself far from the foggy fjord she once called home, and yet her journey across the Nine has just begun. Armed and targeted with the power over fate, she seeks to master the magic in her blood before Fenrir and the witches rise again. Until Erik strips her from the arms of her beloved—and all memory of him—and takes her to the witches hiding in a realm of fire giants. To survive, Ailsa finds an ally in a strange, silent man who seems just as intent on escaping the giants as she is. Anger, hatred, malice. Vengeance. As Vali searches the Tree of Life for what was taken from him, his pursuit takes him across forbidden realms with two unexpected companions. With the threat of Ragnarok brimming on the horizon, Odin becomes desperate to find the son prophesied to slay Fenrir and stop the end of the Nine before it’s too late. And when Vali discovers the truth about his father, finding Ailsa becomes more crucial than ever. With her newfound family as shattered as her memories, Ailsa must fight to know her past if she wants to save the future, even if it means turning old friends into new enemies. The blood left on her hands will force her to wonder where they will all stand in the end, and whom she will face on the opposite side when the time comes.