Vampire Knight is a series that focuses on the main character Yuki Cross. She was found when she was a little girl and was brought up from Kaien Cross. This man is the headmaster of the Cross Gakuen, a school that is very particular because it is splitted in two: the Day Class, where there are normal people (humans LOL) and the Night Class, attended from vampires. Yuki is the Guardian of the Night Class' dormitory together with Kiryu Zero, with who she shares a very deep bond, even she thinks for a long time that she's in love with Kaname Clan, the head of the Night Class.
She will be always busy with this job, until the day that it will be reveled that she's a vampire too and she's Kaname's sister... A battle among vampires, humans and hunters will start very soon!