In the final days of the Vietnam War, someone is killing the officers of the elite Cobra Force. Two undercover M.P.'s are assigned to the case. The trail leads from the streets of Saigon to the war zone.
Greedy oil speculators, led by Morgan, are trying to force Tiger Woman and her band of warriors from their jungle home. Allen Saunders of Inter-Ocean Oil wants to develop the oil, too, but fights with Tiger Woman to stop the bad guys.
A top-secret experiment spawns two highly intelligent life-forms: Einstein, a golden retriever with an IQ of 175; and The Outsider, a deformed monstrosity that exists to kill... and avenge its creators. When the Outsider escapes into the jungles of South America, the government sends in some ex-military convicts to catch the beast. But what starts out as a high-speed chase ends up in bloody carnage. Only Einstein knows the Outsider's motives, and only the canine can outsmart the creature. Now, it's a battle of beasts as man's best friend confronts man's worst nightmare.
Tough guy Thomas Beckett is a US Marine working in the Panamanian jungle. His job is to seek out rebels and remove them using his sniper skills. Beckett is notorious for losing his partners on such missions. This time he's accompanied by crack marksman Richard Miller, who's more of an office-type. Together they plan to seek out an important rebel leader, whilst avoiding a rogue marksman who frequents this part of the jungle.