Blood

Ji Sang is a vampire who wants to live a normal life like an ordinary person. He finds a vampire’s remains.

Some data about vampires is found in the database of a hospital. Ji Sang decides to work at the hospital.

Someone swapped the medicine, and the data is gone from the database. Someone knows Ji Sang’s identity.

Ji Sang tries to get a liver for a patient who needs a transplant. The mysterious guys who attacked him reappear.

Ji Sang feels that something is wrong with his body. Dong Pal suffers from withdrawal and hurts Ji Sang.

Ji Sang goes to Jeju Island with Ri Ta and finds out that she is the girl he saved from a wild dog before.

Ji Sang decides to leave Korea as his lust for blood gets stronger. Ri Ta keeps avoiding Ji Snag, which bothers him.

Ri Ta throws a going-away party for Ji Sang. She has mixed feelings now that he is about to leave Korea.

Ji Sang looks into the unfortunate incidents that happen in the hospital. He visits Ri Ta while she is sick.

Ji Sang and Ri Ta find out each other’s secrets. He gets one step closer to the secret of the virus.

Ri Ta starts research for Ji Sang suffering from side effects. Kyung In asks Ga Yeon to get a blood sample.

After seeing Chief Jeong's diary, Ji Sang becomes suspicious of Jae Wook. Jae Wook visits Chief Jeong.

Ri Ta asks Ji Sang why Je Yi threatened her. Ji Sang shows a video to her instead of giving her an answer.

After figuring out that Ji Sang is infected, Ji Tae begins researching the VBT-01 virus vaccine.

Ji Sang succeeds in taking a blood sample from a patient, and abnormal symptoms are found in the hospital.

After finding out Jae Wook is his parents' enemy, Ji Sang and Ji Tae accelerate their research on the vaccine.

Jae Wook threatens Ji Sang using the patients in Ward 21A. Kyung In uses Hye Ri’s death to pressure Jae Wook.

Ji Sang struggles to deal with the patients in Ward 21A. Chairman Yoo collapses from a drug injection.

Ri Ta is shocked by Chairman Yoo's death. While that goes on, Kyung In finally reveals her true nature.

Upon learning of Ji Sang's research results, Jae Wook decides to kill Ji Sang, putting Ri Ta in danger.