Park Ji Sang (Ahn Jae Hyun), Joo Hyun Woo (Jung Hae In), and Luuvy defeat the vampires who broke their close to stealing information about VTH-16.
Ga Yeon (Son Soo Hyun)'s fear is allayed by the news of their safety.
Luuvy is the savior of Hyun Woo's life~ lol
Lee Jae Wook (Ji Jin Hee) shows a video clip of patients having a fight as a result of the virus injections.
The director threatens the young doctor, "I will send a patient in the 21A ward. I can't figure out how to solve the problem causing side effects."
Ji Sang finally decides to find a way out to remove unintended effects for patients after he understands the seriousness of the situation.
Ji Sang worries about Yoo Ri Ta (Ku Hye Sun)'s safety but she comforts him with soothing talk.
"I'm not scared of him. I will be your strength. Don't have a sullen face." she kisses him on the cheek.
"Can I stay over? I'd like to lie down on the bedside by side." she smiles wearing a padded jacket and toque.
"I will turn on the cooling-off period. Sleep on the warm floor." he refuses.
But she lies to his side and he worries about her feeling cold.
"It's better than I thought. A little bit cold but I'm happy. No woman can experience this in the world." she speaks kindly to him.
Jae Wook gets to know Joo In Ho (Kang Sung Min) gave Yoo Seok Joo (Kim Kap Soo), Ri Ta's uncle, an injection of the incomplete virus.
He sends J to In Ho to teach him a lesson but he runs away with all the information about VTH-16 after killing the vampire.
"Find him and take him. I will not tolerate if someone betrays trust!" he can't disguise the fact that he feels uncomfortable.
On the other hand, Choi Kyung In (Jin Kyung), assistant director, goes to see the director and raises questions about the disappearance of Seo Hye Ri (Park Tae In) showing him the evidence.
"Yes! I killed her. I know we belong in the same class. Do you want to have the hospital or keep faith with the president? I want you to be with me." he shows his true colors.
Ji Sang wears a perfume which Hyun Woo developed to tell vampire from ordinary human being making them give a cough.
He is shocked at Ga Yeon's sudden cough while talking with her in the hospital.
