Sapor Island is the only place on earth where vampires and humans can live together. Humans are required to know self defense and teenagers are suppose to be trained when they enter grade 12. Hyoyeon is a human and is one of the top ranked students in the whole school but also she’s the last rank for strength. She lacks the knowledge when it comes to strength and is very weak compared to the other humans. Eunhyuk is a vampire and doesn’t do well on his school work but he’s one of the strongest students. They’re both seniors that attend Vera Hall high school which is one of the best schools when it comes to both academics and strength. There are three buildings; two of them are dorms for the humans and vampires. Each dorm separates the males and the females. The third building, building A, is where the cafeteria, libraries, gym, and classes are located at. The teachers are also vampires and humans however they’re a lot stronger than the students.  The majority of students are vampires. There have been so many incidents where many humans were attacked by vampires. If they’re bitten, then they later turn into a vampire. But some may die because their bodies can't handle the infection. So there’s a rule, after the sun goes down humans are required to stay in their building. But if humans are trained well and know self-defense then they can leave the building before curfew. Will the students be able to get along with each other?