In Dallas, witnesses against a drug-lord are murdered in a safe-house.The testimony of FBI agents becomes the only chance to keep him in prison. They are lodged in another safe-house, but the place is invaded and the agents are executed. However, Kate is only wounded, and her boyfriend Nick believes there is a traitor in the agency and takes her to his ranch to protect her life.

An expedition led by adventurer Darren McCall and funded by the wealthy Harry Vargas braves the impenetrable jungle to retrieve a fabled bejeweled dagger from an ancient burial ground. But pulling the dagger from its rightful resting place awakens the long-dormant plant creature – part plant, part animal, and all bloodthirsty — and sends it on a feeding frenzy from which there seems scant hope of survival or escape…