In a war-ridden world where power and love drive people to kill and betray one another, simple orphan girl Iris must learn to suddenly navigate a life of responsibility while quickly learning the dirty secrets of war. The seventeen-year-old must learn to grow up fast as the lives of her people are placed in her hands, a prophecy pushing her towards reconciling with her sisters. 'Only once the four royal sisters reunite, will the Kingdom of Caedus overcome this blight', yet ceasing the war isn't as easy as she suspects. She must first find her youngest sibling, Raena, princess of Lympha and a remarkable huntress who has been hiding deep in the Dark Forest. However, Raena has her own nightmarish demon chasing her. All the while, Iris faces another dilemma: Caedus's most lethal assassin has arrived to claim her head as prize, and worse - the assassin, is her elder sister.