J breaks into Yoo Ri Ta (Ku Hye Sun)'s house.
Park Ji Sang (Ahn Jae Hyun) finds out that he is the vampire who killed his mother and they fight like a tiger.
The young doctor says, "Do not touch her. If you do again, I will kill you." to J making threats against the female doctor.
Ji Sang takes her to his house for Ri Ta's safety.
She asks him to tell her the truth and she becomes to know Ji Sang's mother was killed by the vampire J after he shows her the video clip his mother left for him.
Ri Ta says, "You grew up fine much more than your mom expected." comforting the man who saved the young girl.
Jung Ji Tae (Kim Yu Seok) is attacked by another vampire Nam Chul Hoon (Kwon Hyun Sang).
Ji Tae visits Ji Sang and demands an immediate explanation saying, "You told me to stop my medical research but you wanted to do with me the next day. I accepted your proposal without a doubt. You have to tell me the truth why the study is dangerous." in an excited tone.
A double agent Min Ga Yeon (Son Soo Hyun) eavesdrops on a conversation between Ri Ta and Ji Sang.
Subtle changes in her expression show her feelings about the man she really likes.
Ji Sang asks Lee Jae Wook (Ji Jin Hee) to give him medicine to change his constitution like a human being.
He gives a question to the director of the hospital, "Am I sure the second person given the medicine?" supposing him gave it to the vampire who attacked him.
"There is one variable here. When I developed it, vampires raided my hideout. I had no choice but to leave it." Jae Wook makes up a story.
Ji Sang gives one medicine to Joo Hyun Woo (Jung Hae In) to test the ingredients of the product. He injects the other for the experience of human beings and has the same temperature as the human body of 36.5 degrees.
The vampire turned human tells a lie to Ri Ta that he caught the flu and saying, "My heartbeat is keeping like human today. I wanna be like this from childhood up." bringing her hand to put to his cheek and chest.
Ji Sang and Ji Tae are attacked by Nam Chul Hoon again.
He gets it into his head that Jae Wook is at the rear.
Ji Sang asks Jae Wook to come to the meeting room and shows a photo of his parent with the young director.
Despite falling ratings, I really expect the next episode. :)