Ambush plot
"The enemy is everywhere."
During the Vietnam War, Major Drummond oversees a group of young elite commandos, led by Officer Ackerman. They have been tasked with gathering top secret information that could change the fate of the war. At the edge of the jungle, the team is attacked by the overwhelming invisible force of the enemy army that wipes out most of their soldiers. As quickly as the enemy soldiers appeared, they disappear back into the jungle. Drummond's young troops must overcome their fear and anxiety to pursue the enemy in the complex labyrinth of the underground Cu Chi tunnels, with danger at every turn.