With Aeden vanished and Faolan waging a war in the south of Gaul, Fianna is sent on a mission to the Noregr to find aide in their fight against the Sorginak and their allies. As the war heats up after three years of a near stalemate, Aeden reappears to lead the armies of the Gaels, while Fianna's adventures bring her face to face with challenges unlike anything she had ever faced before.