After Firebase Ladybird suffers heavy casualties, Sgt. Anderson goes to division headquarters to make a report and recruit replacements. He selects the best from a group of new recruits and meets fir the first time their new leader, 2nd Lt. Goldman.

The VC are mauling the American soldiers through their use of the underground tunnels. On their latest trip into the bush, Anderson and the men provide a blocking force, only the Gooks being driven toward them disappear down into the tunnels... and Goldman and Anderson end up firing on Americans -- thinking they are VC coming toward them. The team ends up in a village but again gets attacked as the VC pop up out the tunnels and then back into them after the attack. Taylor is captured during this fighting -- having been wounded. Taylor ends up being befriended by a VC Doc who has no interest in fighting -- only in returning home alive. On the surface, Anderson and Goldman go into the tunnels, only to end up entombed by a cave-in.

Among the villagers being relocated by the platoon is a beautiful woman to whom Goldman is attracted. When they are attacked on the trail, Goldman's life is saved by a VC who turns out to be the woman's husband.

The company provides security for an irrigation project, but after several successful ambushes on them, the men of B Company suspect their Vietnamese scout of spying.

In a time of great racial tension and violence in America, the same problems were carried over to Vietnam, where it was not unusual for bars -- or sometimes entire sections of towns -- to cater only to whites, blacks or hispanics. To wander into the wrong ""territory"" was a mistake that could lead to violence and death. Taylor and three of his brothers encounter such a problem when Percell asks them to meet him at what turns out to be an all-white redneck bar. A fight breaks out between one of the blacks, Tucker and a KKK member, Innis. Both end up in Bravo Co, and while on a patrol, Tucker's friend is killed when Innis fails to provide coverage. Racial tensions mount. As the black soldiers discuss their own people dying at home to obtain some equal rights, they see Innes put up a Confederate flag. Violence breaks out, and, in the end, Johnson gets accused of starting it. A conflict at the brig nearly ends in gunfire but, in the end, Tucker -- the trouble-maker is transfered out and thi

Anderson, Baker, and Johnson are shot down while catching a ride in a helicopter, which explodes just after it hits the ground. They are unhurt but the pilot is dead, and VC soldiers are firing at their position. Zeke manages to kill all of the VC but one, who escapes. With the fighting over for the present, they begin the long trek back to base, all the while being hunted by the VC. The enemy group is led by Trang, a man who wants to kill the Americans for revenge. The three Americans stumble upon a village of Montagnards who have been wiped out, all but a pregnant woman who is dying... and does just as the child is born. Anderson is adamant about leaving the baby behind, but Johnson and Baker consider that move barbaric. Anderson ends up taking care of the baby and forming the strongest bond. Meanwhile, Goldman is out looking for Zeke and the others. Back in the jungle, Anderson risks his life to get milk for the baby and keeps the child from being killed. In a heated exchange of gun

A drunken GI steals a chaplain's jeep and goes on a joy ride with a Vietnamese hooker. They nearly collide with a jeep-load of MPs who chase him down. His arrest is witnessed by Zeke, who recognizes him as Decker, his former drill sergeant and role model. Anderson rescues Decker from a certain court-martial (his second) and drafts him into the squad without checking with Goldman first. Decker is popular with the guys but he almost immediately starts to disobey orders. Decker mans a listening post with Horn to watch for enemy troops movements, but he gets drunk and falls asleep. As a result, Horn is nearly killed.

Baker insists his fellow squad members follow him to an incoming helicopter. The incoming ""VIP"" turns out to be Baker's twin brother, who brings along a skate board that the whole squad uses for fun. Carl Baker turns out to be nothing like his brother: he is hard-drinking, womanizing, party-goer. The two brothers end up in a fight, nearly destroying the base in the process. Carl celebrates their birthdays by bringing in a truck-load full of Vietnamese hookers. They all party down and, in the end, Baker ends up doubly-mad as his brother ""steals"" his girl. Carl leaves the next morning with neither brother on speaking terms and everyone in trouble. Carl's helicopter goes down and Baker goes in after him, managing to get caught by the same VC who have his brother. They are both tortured by the VC and Anderson and Goldman must go in to rescue the two.

Two sappers make their way into Firebase Ladybird without being detected, but Percell sees the third one, killing him. The other two manage to set off their explosives before they can be stopped. The next morning, Capt. Wallace orders Anderson and Goldman to have their men police up the dead bodies.. Anderson complains his men are beat, but Wallace isn't concerned. Percell is upset both over a friend's dying and having received a ""Dear John"" letter. Goldman, meantime, runs into an old friend: Lt. Nikki Raines, and promises to meet her later. Goldman, Anderson and the squad go out to destroy a bridge, which they blow up. Percell, in the midst of chasing a running VC, accidentally kills an 8-year-old. Percell is devistated over the incident.

Anderson, Goldman, and Captain Wallace are checking out a new weapon that has been added to the platoon's arsenal: a flamethrower. Zeke and Goldman are unhappy that the next mission will also include a beautiful female reporter -- Vicky Adams. Zeke fights against the woman's urges to ""get the good stuff"" and his own men's attempts to impress her -- at the risk of their own lives. A prisoner is caught and tells the unit that they are surrounded by an NVA regiment. Wallace refusees to go back to safety, though, and a bad situation continues to get worse and worse.

A USO band comprised of three female dancers, a sax players, and a singer, completes their performance at an outlying base, and are rushed to a helicopter to be flown to their next destination. None of them get a chance to even change their costumes. The helicopter is shot down and the entire crew is killed. Meanwhile, Bravo company is out on a recon, and Taylor who is on point, thinks he must be going crazy when he sees the girl in hot pants and leather boots. Bravo company takes the girls with them but can't call in for help because the radio's batteries are dead.The USO people make the transition to ""soldier"" with various degrees of success.