Second Lieutenant Han Sang-yeol leads his platoon during the Korean War in the early 1950s. He carries emotional scars and pain within. So when he meets some children from a choir, who have lost everything in the war, Sang-yeol is deeply moved and tries to protect to them.
Dong-goo

Kim Hyun-bin
Il-hwan

Lee Re
Soon-yi

Park Ji-yeon
In Sook-i