During the Battle of Iwo Jima, a photograph of six men raising the U.S. flag on Mt. Suribachi becomes iconic. 'Flags of Our Fathers' follows the lives of three surviving servicemen who become heroes and are used to promote war bonds, despite their own doubts. The battle continues, resulting in the deaths of three marines, while the others are taken out of combat. The men struggle with their newfound fame and the public's perception of heroism.

The story takes place during the battle of Iwo Jima in World War II, focusing on the perspective of the Japanese soldiers defending against the United States. It follows the journey of Private Saigo and his comrades as they face the harsh realities of war, including poor conditions, heavy casualties, and the struggle for survival. Despite the overwhelming odds, they display courage and determination in the face of adversity. The film explores themes of honor, sacrifice, and the human toll of war.