Seohyun's a nice girl. One day, her mother told her to give her older brother some moneys since her brother didn't live with them. Her older brother was Sehun, he studied at Seoul Unique School, a school which only available for boys, who was werewolves and vampires. Her older brother was a werewolf, that's why he lives with his friends. When Seohyun went to Sehun's school in holiday, some of the boys students were vamp