Starring: Kim Seung-woo, T.O.P (Choi Seung-hyeon), kwon Sang-woo and Cha Seung-won

In August of 1950, when the Korean War was well under way, a letter was found in the pocket of student soldier Lee Woo-geun who died while fighting in a battle to defend the Nakdong River. The letter, which the 16-year-old had failed to send off to his mother, read the following: "Mother, I killed a person. It was such a brutal death. Why do we have to go into war? I'm thinking frightening thoughts. I wish the war would end quickly and feel your warm embrace". Film "71-Into the Fire" starts with this letter.