An American soldier who had been killed during the Vietnam War is revived 25 years later by the military as a semi-android, UniSols, a high-tech soldier of the future. After the failure of the initiative to erase all the soldier's memories, he begins to experience flashbacks that are forcing him to recall his past.

West Point graduate lieutenant Jeff Knight meets cynicism when taking command of sergeant Michael McNamara's tour veterans platoon in a Vietnamese trench camp. Unlike his predecessor, who hid till the end of his tour, Jeff takes charge, experiences the manual doesn't allow coping with all realities and gets wounded. He returns, now fully respect by men and superiors. Besides the Vietcong, the platoon wrestles with the inscrutable villagers, which the G.I.'s officially protect, but also fear as some collaborate with them, other covertly with the Cong, either way subject to bloody reprisals.

A pair of detectives are assigned to investigate a murder, and discover a trail of corruption and criminal activity that leads right back to their own police department.

Col. Cooper leads a group of American P.O.W.s, battling their way to freedom as Saigon falls to the Viet Cong.