A story about the love and married life of six married couples who are pigeonholed into six types of marital relationships!
Hyeon was killed in the battle field and his corpse was bitten by bats, thus turning him into a vampire. His only salvation was to draw the blood of 9 virgins at full moon. Yeon was framed by her husband Jae Seong's mistress and was being accused of having an affair. While looking for his prey, Hyeon came across Yeon and saved her from being killed by her in-laws. The two fell in love which was destined to end in tragedy right from the start.
Cha Seung Hyo is an abandoned child who gets adopted in the United States and grows up to be a cold hearted person. Son Il Gun is a father who died, but he left things unfinished with his daughter. In order to make sure that his daughter is provided for he controls Seung Hyo's body for three hours a day for 49 days. He buys his daughter the things he couldn't do when he was alive with Seung Hyo's money. Il Gun's daughter, Young In, is a quick-tempered girl who meets Seung Hyo during her part-time job. At first she has a bad impression of him but she gradually starts to fall for the lonely Seung Hyo who is unable to open up to anyone else because of his bitter past.
Min Ki Seo and Lee Young Shim hated the sight of each other at first but later developed affections along the way during their daily fights and disagreements. Min Ki Seo was a doctor who looked down on people and was a haughty person until he met Lee Young Shim and her child who had AIDS. Lee Young Shim was a very cheerful and positive person despite the difficult life she was facing. Through her, Min Ki Seo slowly changed for the better into a warm and caring person.