War between the kingdom of Ragnanival, led by the king Odin, and the realm of Ringford, led by the queen Elfaria has devastated the country of Valentine, of which only scattered ruins remain. The story is told from the perspective of five characters whose stories intertwine: Gwendolyn, valkyrie and younger daughter of Odin; Cornelius, prince of the neutral country of Titania; Mercedes, daughter of Elfaria and princess of Ringford; Oswald, a shadow knight and agent of Ringford; and Velvet, a survivor of Valentine's devastation.