June 25, 1950. When second lieutenant Jang has a date with his girl friend during weekend, numerous North Korean jet fighters make sudden air raids to the skies of Seoul. It is the beginning of Korean War. In spite of Korean Army's brave defense, North Korean army reddens South Korea with their state-of-the-art weapons. This movie describes the progress of war from the invasion in June 25, 1950 to the reclamation of territory on the basis of Sun-A's personal experience. Also this film reminds hard lessons from tragic history.

Kang-wook, a law student at Seoul National University, finds himself in a tight spot financially after losing contact with his family in North Korea. He sells his own blood at a hospital to make ends meet, and there he meets and grows close to nurse Jin-young. As Kang-wook faces financial difficulties, Ki-yong, a son of a landlord's agent, appears and tricks Kang-wook into joining left-wing activities. Ki-yong's true identity is revealed by Yoon-ae, a friend from hometown, leading to his arrest. Meanwhile, Kang-wook and Jin-young marry with the blessings of Professor Park and their friends, while Kang-wook's friend Do-hyeon struggles to hide his feelings for Jin-young. Their sweet days together come to an end with the outbreak of the Korean War, separating them. Jin-young, unable to wait for Kang-wook any longer, decides to flee the war with Do-hyeon. Kang-wook, hiding at Yoon-ae's house, is eventually arrested by Ki-yong and the leftists, who had been freed from prison.

Ha Dong, Kyung Nam Province in 1890. Choi Chi-Su's family is a grand land lord of the region from generation to generation. His mother Mrs. Yoon gives birth to another son Hwan after she was raped by Kim Gae-Ju when he is 10 years old. Later Hwan becomes a servant of Choi family but he falls in love with Chi-Su's wife and they flee by night. Meanwhile after a reign of 40 years of King Ko Jong, cholera prevails all over the country and years of famine follows it. While people suffer from natural disasters and diseases, one of Chi-Su's maternal relative Cho Jun-Ku and his wife make a plot to take Choi family's enormous wealth and strengthen the foundation for his status. In this chaos some villagers and Seo-Hee, Chi-Su's daughter leave their village for Buk Kan Do.

Kim Jong-won, a communist operative in South Korea, turns himself in and assists the Special Investigation Unit to bring the other members of his organization to trial.