In 1976, age thirteen, 'June-seok' (Yu Oh-seong), 'Dong-su' (Jang Dong-gun), 'Sang-taek' (Seo Tae-hwa), and 'Jung-Ho' (Jeong Woon-Taek) are always together and they are best friends. They have nothing to be afraid of when they are together. However, as they grow up, there comes a conflict among them. 'Dong-su' has an inferiority complex to 'june-seok' and their relationship becomes distant. When they become twenty, their lives become very different. 'Jung-Ho' and 'sang-taek' go to university. June-seok becomes a boss of a gang group after his father died, who was a boss of the group. However, 'Dong-su' becomes the member of a gang that is against to the 'June-seok's group. 'June-seok' and 'Dong-su' becomes more distant. After a few years, 'Sang-Taek' is planning to go to America to go to the graduate school. He wants to meet their friends before he leaves but nobody appears in the airport when he leaves. He has an unlucky premonition as he leaves Korea. Finally, there comes a serious conflict between 'Dong-su' and 'June-seok' after that.