"It may be a path of suffering, a path of crosses, a lonely path, but you have me, and I have you, and we will go together." These were the words of Father Moon Gyuhyun in 1976 after he was ordained a priest and visited his brother, Father Moon Junghyun, in a Seoul detention center to bless him. The two brothers have spent the last few decades on the road. From declarations condemning the dictatorship, to bold attempts to cross the divide, to campaigns against military development and environmental degradation, the road has been the scene of struggles for democratization and progress in South Korea. Divided into two chapters, "Crossing the Divide" and "Walking the Path of Peace," The Story of Father, Brother captures the essence of their extraordinary lives. By arranging archival footage, historical records, and present-day scenes in a neat and understated manner, the film finds ways to commemorate those who "came to the lowest place." One of the ways is to follow the story of the two brides, but not bring them together. As we follow the images and words that faithfully capture Father Moon Junghyun and Father Moon Kyuhyun in their respective fields, we suddenly realize that we are witnessing a conversation between two people separated by time and space. In this way, Father, Brother approaches the truth that the priests on the road have devoted their lives to.