F.B.I. special agent Nicole Diaz is dispatched to Oro Negro to investigate a series of strange murders involving two agents in Sarasota, Florida. Initially, the deaths are believed to be the work of smugglers or drug traffickers. However, the local Tribal Ranger notices that the victims’ bodies have been drained of blood, leading to suspicions of a more sinister cause. Shortly thereafter, a mysterious woman and her assistant arrive during an autopsy, asserting that they have engineered the ultimate killing machine—a creature crafted for desert combat, intended for military use.