In the world of Asgard, living among Odin, Thor and Loki are the Valkyries of legend. They are Norse goddesses who reap the fallen souls from human battlefields and have the power to cause death with just one touch. Freya and the Valkyries learn that the Frost Giants, Fire Giants and Dark Searchers have united to declare war on the Realms. Bitfrost, the legendary rainbow bridge linking the human world to Asgard, has been closed. Loki claims he knows another, secret route but can they trust him? As the War of the Realms spills over into Earth, Freya and the Valkyries must find a way to save not just the Norse world but the human world as well.