Sgt. Vic Hollowborn (Michael Pare) is a soldier in Vietnam. Some of his comrades get ambushed by soldiers from North Vietnam; these soldiers had created very long tunnels that they could live in until they were ready to carry out their battle plans. Hollowborn goes back to the scene of the ambush with a few other soldiers to get revenge for his lost buddies. Some of the young Americans are barely out of their teenage years. Pvt. Jim Ludford (Nate Parker) thinks he’s tough enough to get through the ordeal, while Pvt. Terence Verano (Rocky Marquette) is too innocent and sweet to be there. However, they and their friends have to stick together to get the job done.