The world had always consisted of vampires and humans. At one point they lived in harmony, mainly because at one point vampires were only able to roam at night while humans were only mobile during the day. As technology advanced and as biological changes occurred, they ran into one another more often. The two kingdoms often collided, the Vampier Kingdom of Void and the Human Kingdom of Light. The kingdoms had multiple wars, and at the end of the third Great War, the humans and vampires decide

Heechul is consumed by revenge for the hurt received by his younger stepbrother, Donghae. Will he ever be able to get over his revenge and live in peace?