Sierra Dai was one of the most famous pureblood vampire queens in history. She was the lover of the king named Kaname Kuran. When Kaname got reawaken by Juuri and Haruka Kuran years ago, Sierra was left to rot in the coffin he once laid in for thousands of years. He missed the presence of his wife, but she was hidden away from all of the vampire society. One day at cross academy Sierra appeared with blood dripping down her neck making her come back in the world. How will this effect Kaname's future plans? How ill Yuki feel knowing that she is no longer the most important girl in his life?