Two years ago, human girl Ella was forcibly bound to pure-blood vampire prince Lucius through a blood pact. They accidentally fell off a cliff. Two years later, Lucius reappears with amnesia and a new fiancée, trampling Ella, once his treasure, and allowing her to suffer humiliation. When lethal werewolf poison and pact blood intertwine, Lucius's sealed memories violently awaken. Facing the once-arrogant prince kneeling in mud, begging forgiveness by digging out his heart, Ella chooses the cruelest revenge: erasing him forever from her world. Four years later, reborn Ella returns as the highest representative of the Human Alliance. At her peak, she reunites with the vampire king who waited four years for her. This time, she faces the sunlight and never looks back. The story explores betrayal, lost memory, revenge, and redemption, ending with Ella's independence and Lucius's eternal regret, while examining love, power, and the cost of cruelty.