Li-hwa graduates college and becomes a reporter. On a rainy day, she remembers an old boyfriend, Suk-gi. She goes to Eroika to look for him. Instead, Li-hwa meets Suk-gi's friend, Su-hwan, and she falls in love with him. On the other hand, while on a story, Li-hwa meets Kwang-jun who is a night teacher. She is drawn to his sincere humanity. As time passes, Kwang-jun comes to know Li-hwa's feelings. Together, they help children and offer guidance to prostitutes. Kwang-jun and Li-hwa have true love for each other but they part when Kwang-jun's non-permitted building is demolished. Hyun-wu ended up as a mental patient from the shock he received from his mother's scandalous behavior. He meets Li-hwa and receives her devoted care. Finally, Hyun-wu recovers completely and the two confirm their love. And the next day, Hyun-wu returns to society as a healthy man.

During childbirth, a family sacrifices the life of the mother to save her baby. She returns from the grave and takes possession of another woman to get revenge.

Falsely accused of murder, Na Ok-min is arrested. In the next cell, Suh Pil-sun sits, his eyes focused on the ceiling. He has an old booklet and a necklace with a strange pattern. He gazes at Ok-min. Ok-min's mother is murdered. Pil-sun dies in prison. Pil-sun's old booklet and necklace have been placed at the head of Ok-min's bed. Afterwards, Ok-min is found not guilty and released from jail. Those involved in the murder of Ok-min's mother are killed off one by one. Suspecting that Ok-min is the serial killer, the investigators look into every detail. They realize that the murders occur when Ok-min is asleep. It is revealed that Ok-min's spirit had been killing those responsible for her mother's death.

Ok-bun had been sold into marriage to the family of Lee Kyung-jin, a family in ruin. On the wedding night, Ok-bun's husband, Myung-kyu dies of odd circumstances. Ok-bun finds out that her sister-in-laws Kyung-ran and Young-suk, who've married Myung-kyu's brothers, were also widowed on their wedding nights. Meanwhile, Wol-ah appears from the grave. She murders Shin and takes his form. Wol-ah goes into the household of Lee Kyung-jin and from that day on, strange happenings occur in succession. Kyung-ran and Young-suk are murdered. Ok-bun goes to Wol-ah's grave and tries to tell her this but it is too late. Wol-ah tries to kill Ok-bun too. But she tells the hardships and sorrows of low-class people and moves Wol-ah's heart. Ok-bun barely escapes with her life.

In 1980s South Korea, a former cop, now in destitution, is placed in a rehabilitation center, where, by chance, he finds the Communist guerilla who had eluded his capture more than 30 years ago.

Young-Hu and Young-Wuk are half brothers and felt uncertain intimacy even though their personalities are totally different. At the first moment he saw Min-Jeong, Young-Wuk's girl friend, Young-Hu fell in love. He avoided her intentionally but the day his biological mother remarried, he happened to spend a night with her in a complicated feeling. After that Young-Hu got the blues due to sense of guilty and Young-Wuk was despair as Min-Jeong confessed him she loves Young-Hu. As he found Min-Jeong's pregnancy, Young-Hu hated shady new life and made fun of Min-Jeong and himself. Thus enraged Young-Wuk madly drove his car to the running train with Min-Jeong.