Ilhwa, the young mistress of the Blood Demon Cult, follows her master’s orders to wipe out the Namgung Clan. However, just before her death, she hears a shocking truth from the very master who betrayed her. “Now, in all the world, you are the only Namgung left.” Ilhwa learns that she is actually Seolhwa, a child from the Namgung Clan who went missing long ago, and that she was raised solely to be used in the Blood Demon’s vile schemes. Returning to her thirteen-year-old self from a tragic death, Ilhwa—no, Namgung Seolhwa—realizes she has been given a chance to change the future and sets out to prevent the annihilation of her clan. Will Seolhwa be able to stop the Blood Demon from destroying her family and succeed in taking revenge?