1967 chris taylor, a young college student, went to Vietnam to serve. The sacrifice of his comrades in the first war made him afraid. Sergeant Barnes, a bloodthirsty platoon, and Elias, a humanist, used to be good friends, but they turned against each other because of their different views. Faced with these two factions, Taylor didn't know what to do. Barnes took the opportunity to kill Ilya in a battle. After several months of battlefield life, Taylor accepted Barnes' point of view and learned to kill people. Finally, he killed Barnes in a chaotic battle.