Freija invites Kimiko to Icelandia, hoping to introduce her teammate to the frozen world she calls home. What begins as a visit quickly turns dangerous when an elemental threat places the kingdom and its people in jeopardy. As the crisis grows, Kimiko finds herself caught in a conflict unlike anything she has faced before, while Freija must confront the responsibilities that come with being an Icelandian princess. With Frigid drawn back into the story, the sisters must face a threat where strength alone may not be enough. Saving Icelandia may ultimately depend on the very bloodline Freija has spent much of her life trying to define on her own terms.