At Millennium Academy, elite vampires are trained to maintain balance in a world where humans and vampires, who possess far greater physical strength than their human neighbors, coexist. When Aldred, the most distinctly un-vampire-like vampire in the entire institution, meets Kei, a human transfer student at the school, their destinies become surprisingly intertwined, and the fate of the world as they know it comes to rest in their hands. Will this unlikely duo be able to break the vicious cycle of blood and chaos that occurs every millennium on the ominous night of the Twin Moons?