The film tells the story a former U.S. Army soldier who was killed in the Vietnam War in 1969, and returned to life following a secret military project called the "Universal Soldier" program. However, he finds out about his past even though his memory was erased, and escapes alongside a young TV journalist. Along the way, they have to deal with the return of his archenemy who had lost his sanity in the Vietnam War, and became a psychotic megalomaniac, intent on killing him and leading the Universal Soldiers. It is the third installment in the Universal Soldier film series.

References:
https://en.wikipedia.org/wiki/Universal_Soldier_(1992_film)