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.

Kim Myung-wu studies modern music in Germany and meets Ji-suk, a pianist. She disappears on the day of his recital to get money for her mother's treatment in hospital and no word from her for a month since. He sees through her mother's funeral when she's gone. When there's a fire in the village, Myung-wu witnesses Ji-suk playing piano at the church watching the flame. She sets a fire at a store she was trying to get the money from but the owner reported her. She blamed her mother's death on the store owner and revenged with the fire. She completes the Pyro-Sonata with help of Myung-wu hiding her from police.

Young-ae is a prostitute who obsesses over money after losing her daughter to illness. Her co-workers are jealous of her. When a prostitute named Mrs. Kangwon dies after giving a birth, Young-ae takes the baby under her care and leaves the brothel district. Although she struggles to make ends meet and provide a home for the child, the child is taken away by the authorities because she is single. She decides that her old life is the only ground for living she has and returns to it.

College boxer Jin-kyu falls in love with a college girl Min-hye while chatting on the phone. Min-hye gives him her virginity but her family forces her to get engaged to In-myung and get rid of the baby with Jin-kyu. Broken hearted, Jin-kyu fights as a professional boxer while seeing Yeon-hi who runs a salon. He loses the match on the verge of championship and suffers failure. Min-hye feels sympathy for him who struggles and embraces life.