Human Acts deals with the May 1980 Gwangju uprising and the death of the young boy Kang Dong-ho. The novel is composed of seven chapters including the final epilogue, with each chapter tracing the passage of time from the incident in the 1980s to the present day. At the same time, the narrative expands to describe the impact that this incident had on other people.
The first chapter follows Kang Dong-ho and his circumstances at the time of the May uprising, while introducing the people in his life. The characters that are introduced in this initial chapter later appear as the narrator or central protagonist in the following chapters. The second chapter follows the story of Dong-ho’s friend Jeong-dae, who died in the May uprising. The protagonist in the third chapter is Eun-sook, who worked with Dong-ho to collect the dead bodies after the Gwangju uprising. Eun-sook is living in the mid-1980s and works at a publishing agency. The fourth chapter traces the arc of Kim Jin-su, who was jailed for his involvement in the Gwangju uprising. He had spent time with Dong-ho and Jin-su and was the only boy who survived. Unable to bear his guilt, however, Jin-su takes his own life nearly ten years after the May 18 uprising. The narrator of the fifth chapter is Seon-ju, who suffered terrible sexual torture during the uprising and is working as an activist in the present day. The sixth chapter is a current-day soliloquy by Dong-ho’s mother, while in the epilogue, the author herself appears as the narrator. In this manner, Kang Dong-ho’s death and the confessions and testimonies of the people who remember him compose the framework of the novel.