Yuki's earliest memory is of a stormy night in winter, wherein she was attacked by a vampire... and then rescued by another. Now 10 years later, Yuki Cross is living as the adopted daughter of the headmaster of Cross Academy, a prestigious private school with an unusual class structure. The student body is divided into two classes: the Day Class, which is made up of ordinary students, and the Night Class, an elite group of 'beautiful people.' Unbeknownst to the majority of students, and even most of the staff, the Night Class is made up entirely of vampires. Now in high school Yuki serves as one of the school's Disciplinary Committee members, a guardian of the vampire race, protecting her savior, Kaname, from discovery as he leads the group of elite vampires who attend the school. At her side is Zero Kiryu, a vampire Hunter and childhood friend who lost his parents four years before to a vampire, and who’s hatred for the creatures that destroyed everything he held dear runs deep. The headmaster's ideals of peaceful coexistence seem all well and good, but have the vampires truly renounced their murderous ways, or is there a darker truth behind their actions? Is Kaname's infatuation with Yuki the beginning of a forbidden romance, or is it something in her forgotten past that draws him to her? What is Zero hiding? Yuki must find these answers quickly, because, in this world of secrets, nothing is as it seems. And the price of misplaced trust may even be worse than death.