Isola, werewolf alpha heir, and Kaelan, vampire crown prince, meet as enemies, save each other. Their love sparks a three-clan manhunt. Hunted by their families, they learn the thousand-year war was engineered by Kaelan's father, High Sovereign Valentin, who feeds on war malice to reach godhood. To stop him, they fuse their bloodlines, burning memories and lifespans. They pay it.