Im Yoona is a half vampire and a half human.But,she didn't know about it.She live a normal and happy life with her sister.But when she transfer to KE High School,her life began to CHANGED.There,she encounter with 2 guy who is her classmate.The first one is Luhan and the second one is Kai.Yoona started to fall-in-love with one of them.Who could it be?Well,let's just talk about it later.But,what she didn't know is that Luhan and Kai is a real vampire who has live about 123 years.In a vampire rule,any vampire that kill HALF VAMPIRE AND A HALF HUMAN,that vampire will get the best power.Yes,Yoona is in danger.But luckily,they didn't know about Yoona real identity.But unfortunately,Luhan find it out only a month after he met Yoona.Fortunately,Luhan don't want to kill Yoona because he is FALL IN LOVE with Yoona.Instead he will protect Yoona from Kai and the other dangerous vampire that want to kill her.Will Yoona be safe?Could Luhan protect her?Will Kai find out that Yoona is a half vampire and a half human?Will Yoona find out the truth?About the boys?About herself?What will happen next...