Yi-su, a 37 year-old professor, can't forget her first love Joon-ho who's missing in action in Vietnam. She meets Hyun-woo one day, who look surprising like Joon-ho. Hyun-woo investigates Yi-su who lives in the past and discovers that her pain stems from the Vietnam war. Hyun-woo can't help falling in love with her even though he's a student. On a trip to Busan, he confesses his love for her. But he soon realizes that the only man for her is Joon-ho. Min-cheol who fought along with Joon-ho sells his belongings to Yi-su at a high price. He tells her that Joon-ho died in a fire and they argue aggressively. Min-cheol commits suicide afterwards and Yi-su is also found dead in the campus pool.
After witnessing her mother's infidelity, Su-mi's psychological scar creates abnormal sexual tendencies. When she meets the hoodlum Ma Do-yub, Su-mi transforms herself into a sexy woman but runs away from the rough Do-yub. Afterwards, Su-mi marries the potter, Se-hyung. But Su-mi is unsatisfied with Se-hyung's abstinence so she lives a double life by wandering the streets at night. Ultimately, Su-mi falls into depression and ends up in a mental institution. She confesses everything to her husband and tries to regain her happy life. At this time, Do-yub reappears and torments Su-mi. She returns to her hometown. Se-hyung protects Su-mi even when Do-yub demands to hand her over. But Se-hyung gets in a car accident and ends up in the hospital. Su-mi goes to him and asks for his forgiveness.
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 retarded 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.
Ha In-young has suffered for years under her husband, Kang Suk-wu. He's kept her captive with his loss of humanity and sexual depravation. In-young yearns for an unknown world. One day, In-young meets Min Byung-gu but Byung-gu leaves her. In-young leaves her husband and even her young daughter Ha-mi. Ha-mi searches madly for her mother. Chairman Kang, Suk-wu's father, understands why his daughter-in-law has run away. Suk-wu anguishes over the actions of his father and daughter. Suk-wu regains his sexual masculinity which he had lost for years. He forgives In-young and receives her again.
Bun-nyeo, a girl in a mountain village loses her virginity to Myong-jun, the village vagabond. After both of her suitors die before they can wed Bun-nyeo, she moves to the city to work in a factory. Myong-jun persuades her to return to the village, but he is arrested for murder. As the film ends, Bun-nyeo is waiting for Myong-jun's release.
