In the city of Umbra, where witches, wolves, and vampires rule, shadow witch Seraphina Voss—heiress of House Voss—is betrayed by her fiancé Malachai, her half-brother Dorian, and her maid Lilith. Stripped of her power, she burns alive. At the edge of death, she sacrifices her remaining soul to make a blood vow to the Shadow Source—and wakes one year earlier. This time, she strikes first: freezing Dorian's authority, shattering her engagement, and exposing her fiancé and maid's affair before the world with a memory crystal. When her own mother and the council corner her, Kaelen Thorne, Alpha of the Silver Moon Wolves, storms into her war under the name of "collecting a debt." What begins as a cold alliance becomes unbreakable trust as they unearth the truth behind a fire fifteen years ago—Lilith’s mother set the blaze to steal a sacred relic and killed Seraphina’s father, while Lilith has spent fifteen years manipulating Dorian with a lie. But a greater evil stirs: vampire elder Cyrus craves the Shadow Source inside her. In the final battle, Seraphina and Kaelen forge the ultimate Blood Bond, fusing shadow and moonlight to destroy him. Their vengeance complete, they wed beneath the Blood Moon, crossing a century-old feud. Yet in distant corners of the world, an older darkness is waking. Their new war has only just begun.
