Main Characters:

Dara Park: A vampire. She wants her first love back so that she can became a human but failed, her first love does not want her back anymore. So she just need to protect him and his friends from the Volturi (evil vampires). She also understand that Jiyong doesn't want her back, so she just want to protect him.

Kwon Jiyong: A human. Dosen't believe in vampires. He got tired of Dara because he always reject his dates so he broke with her. When Dara ask him that she want him back,he reject it. Found it afterwards what was Dara's mission was to protect him and his friends and found out from Dara's friends that she was a vampire and want her to help and want her back.

Park Hye Ri: One of Dara's dearest friend. A vampire. Became a younger sister to Dara.

She hates humans because they were just so stubborn to accepts that they vampires has exist.

Kim Min Young: One of Dara's friend. A vampire. Became a big brother to Hye Ri and a younger brother to Dara. He also hates  humans because they  hurt his Dara noona.