Cross Academy is famous for strict and strange orders: students attend classes in shifts. Day - ordinary students, after sunset - the elite class of the night, sleek beauties in dazzling white uniform. Of course, the students do not know that night the students - vampires. In order to maintain secrecy and to ensure the safety day course, Rector of the Academy of foster children (adoptive Yuki and taken them to raise an orphan Zero) acted as chiefs. They are required to prevent any contact of students of different streams. And this is not easy to achieve, as a high school student and pulls to a good night`s students... and vampires do not mind to get acquainted with high school student!