Luhan was a 17-year old boy from Gyeongsangnam-do, South Korea. He and his parents moved to Gangwon so that he can study in a high quality education school. He has new friends who never leaves him. But in his new school, there's someone who didn't gave him a warm welcome. 

Kim Minjae was very known in their school, so as her older brother and older sister. But there's a mystery inside of her that Luhan wants to know. The evidences show through her every action towards him. The impossibility of speed, changing of eye color from black to golden brown, her skin was pale white and ice cold and the tone of her voice kept changing. He wasn't afraid of a 'vampire' like her since he knows her very well.

But will Minjae resist Luhan's blood and let her heart teach her how to love him?