The young master of the Blood Demon Sect, Ilhwa, follows her master’s orders to wipe out the Namgung Clan. But on the brink of death, betrayed by the Blood Demon, she hears a shocking truth: “Now, you are the only Namgung left in the world.” Ilhwa learns that she was actually Seolhwa, the child long lost by the Namgung Clan, and that she was raised only to serve the Blood Demon’s vile schemes. Returning to her 13-year-old self from a tragic death, Ilhwa—no, Namgung Seolhwa—realizes she has a chance to change the future, and sets out to prevent the destruction of her clan. Will Seolhwa be able to stop the Namgung Clan’s downfall and take her revenge on the Blood Demon?