Lost in the Colombian rainforest, only his supernatural canine companion can keep this American soldier alive. Caught in the crossfire between paramilitaries, drug dealers, rebel guerrillas, and the Colombian Army, US Army Private Jeff Thompson and Silver, his K9 companion, are forced to make their way through the jungles of southwestern Colombia to rescue a drug lord's daughter held captive by rebel guerrillas. Silver, the product of a decades-old breeding project overseen by the American military, possesses supernatural abilities that are barely under her control. When Jeff is surprised by a payoff from the drug lord and seduced by his beautiful daughter, the US Army believes he has gone over to the other side and sends a Retrieval Team after him, with a powerful dog of its own.