Because of transfers the school from the US to Seoul National University, Yuri has bumped into the institute continuously to the vampires, Donghae and his partners that always in the institute attended class. Yuri attempt to approached him although Donghae likes to bully her and Donghae has hidden her secretly for her blood as he wants her blood, what kind will their destinies be?  And the another side somebody is staring for Yuri, how will happen when he capture her?  How can Donghae protect her from the somebody?  Can they face the  coming crisis?

Kwon Yuri

She is bound by a common destiny with the only elder brother since childhood, her parents died because the traffic accident when she five years old.Although she and her elder brother lives together since their parents died, she has also been very amiable and received the welcome of many people.

 Lee Donghae

He is a handsome and a rich guy.He always having a cold face and been unfeeling to everythings, he is very mystical in one of them in the university, just because his real status is a vampire.He is longing for Yuri's blood since meets her.He aslo likes to bully Yuri since meets her at the first day.

Kim Taeyeon, Jung Jessica, Sunny Lee Sunkyu, Im Yoona, Kim Hyoyeon, Choi Sooyoung, Tiffany Hwang, Seo Joohyun, Leetuek ,Lee Sungmin, Ye Sung, Kim Heechul, Choi Kyuhyun ,Choi Siwon ,Kim Ryeowook , Lee Eunhyuk

They have pair of couples, they are also Donghae's partners as they are vampires too.But they are friendly with Yuri not like Donghae but they listen to what Donghae says. They didn't longing for Yuri's blood such they usually drink animal's blood.

 Kwon Hyukjun

He is Yuri's elder brother and nice to her.He is seven years old older then Yuri and work in the chairman of Kwon group, Kwon  group is their parents stays behind for him after they died.He is only twenty-four years old for the chairman since he back from Paris's university. When he was at Paris,the Kwon group was be in charge of their uncle, Lee Soo Man.

???

The one who staring of Yuri's blood.He will be the danger for them