On April 24th, 1951,on his 24th birthday, Seymour Bernstein was dispatched to the Korean War as an infantryman in the U.S. 8th Army. He performed more than a hundred times for eight months across battlefields. He would play Chopin even when cannonballs were flying above his head, and even when he could hear a burst of nearby gun fire from Chinese soldiers. At night, he kept a diary of what had happened that day. The vivid memories of those times are in his two diaries. Diary from the Battlefield was planned in order to commemorate the 70th anniversary of the Korean War in 2020. He recalls the memories of war that he had wanted to forget, so much so that he had never seen those diaries properly until he turned 93. The film is about war, youth and piano that the diaries and documentary record. War and art - these two themes greatly impress human beings regardless of race or language. Seymour Bernstein is now waiting for the day to play in a peaceful Korea again. His play is going to give people who wish for peace the energy of healing and recovery.