Story of Trung Lei, a young Vietnamese rice farmer conscripted into the Viet Cong during the Vietnam War, who kills an American soldier who once showed him mercy, crystallizing his understanding of why America struggled against a united Vietnamese resistance. Through harrowing battles, tunnel digging, and profound personal losses—including his girlfriend Quan who becomes a military commander before dying in combat—Trung's journey reveals the devastating human cost of war from the perspective of those fighting on their home soil against a foreign power divided against itself.