
Jae Wook tells In Ho to ignore Chairman Yoo's request to be vaccinated. In fact, if necessary In Ho should call him. In Ho asks why 21A patients are vaccinated even though they are not stable? Of course, because Chairman Yoo is the one who funded the research of the new drug development team. If anything happens to Chairman Yoo, then everything is up.
Ji Sang gives the antibodies Hyun Woo developed to Ji Tae. After seeing the reaction to blood samples from ward 21A patients, Ji Tae stated that the antibodies given by Ji Sang are very dangerous. Because, the antibodies not only kill the virus cells, but healthy cells as well. That is why, Ji Sang wants the research in ward 21A to end, because it will not be easy to find the cause of why the antibodies are dangerous. Ji Tae insists he will continue. Ji Sang agreed.
Then, Ji Tae asks about the aggressive-passive war between Ji Sang and Jae Wook. Ji Sang admitted that it still happened. Ji Tae throws out an idea to provoke Jae Wook.
Ri Ta meets Kyung In to ask about Chairman Yoo's physical check. Kyung In said Chairman Yoo has undergone a one-time physical examination, but advised not to tell Ri Ta. The result of the physical check is increased glucose levels. Although it won't have a bad impact. Kyung In said she was worried about the tremors in her hands. He asked Ri Ta not to tell or ask Chairman Yoo.
Jae Wook returns to his room and finds a CD that reads “Bombs”. He put that CD in the DVD driver pc. He found footage of blood cells being infiltrated by the vaccine and exploding.
Ri Ta asks back what rare disease Chairman Yoo has and is there no chance to cure him? The doctor said there was no treatment. There is a chance that this disease will decrease in Ri Ta, yes about fifty percent chance. He mentioned that his father Ri Ta was not affected by this disease, but that does not mean Ri Ta became safe.
Ji Sang meets Jae Wook at his apartment for an evaluation. Arriving there, Jae Wook shows the CD bearing the bomb and destroys it easily. He asked the name of the antibody tape that was inside the CD, which ate everything it touched? Ji Sang replied casually: vampire antibodies to human VTh version 16.
Jae Wook asks why Ji Sang showed the tape? Ji Sang is taunted if Jae Wook needs him to bombard patients who fail to be treated with his new drug. With complete confidence, Jae Wook stated that he would not need it. Medicine's perfect. Ji Sang sighed and exhaled to give Jae Wook more time.
Ji Sang judged that if the cooperation of Jae Wook, Han Su, and his parents were not in disarray, maybe Jae Wook had succeeded now.