In the early 1860s, the United States is torn apart by Civil War. The conflict between the North and the South affects everyone, including many boys who want to join in the fight. Among them are young Edward Black, Lyston and Orion Howe, and Charles Moore. They're too young to fight in combat, but they show their courage by marching to battle as drummer boys. Like any other soldiers in the war, they risk being wounded, captured, or killed in action. But in spite of the risk, these courageous boys bravely face the dangers of war to help fight for their country.