I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: Cannibal Ferox Movie plot: The film begins in New York City. A man buys heroin from his dealer, Mike. The man meets two mobsters who are also looking for Mike, because he owes them $100,000. The mobsters shoot the man and leave him for dead. In Paraguay, siblings Rudy and Gloria and their friend Pat prepare for a journey into the rain forest. They plan to prove Gloria's theory that cannibalism is a myth. The trio encounter Mike and his partner Joe. Joe is badly wounded; Mike explains that they were attacked by cannibals. During the night, Gloria goes missing and Rudy finds a native village while looking for her. Due to Joe's injuries, the travelers decide to stay in the nearly deserted village. Mike seduces the naive Pat. In a cocaine-fueled rage, he encourages Pat to kill a native girl. She is unable to do it, so Mike kills the girl himself. In his dying moments, Joe reveals that he and Mike were responsible for the cannibals' aggression. They came to the region to exploit the natives for emeralds and cocaine, taking advantage of their trust in white men. One day, while high on cocaine, Mike brutally tortured and killed their native guide in full view of the tribe. A badly charred body, previously believed to be that of a different guide, is actually this native. Mike kidnapped a native girl to lead them out of the jungle, but the outsiders were followed and attacked. Following the latest murder, the natives hunt the outsiders. Joe dies of his wounds, and his body is found and cannibalized by the natives in full view of Rudy and Gloria, who are hiding from the natives. Mike and Pat abandon the others, but all are captured by the natives and forced into a cage. The prisoners are forced to watch Mike as he is tortured and beaten. The natives transport their prisoners to another village, but Rudy manages to escape. He is caught in a booby trap in the jungle, and his bleeding wounds attract piranhas. The natives shoot him with a poisoned dart, and he dies instantly. Pat and Gloria are put in a hole in the ground. Mike is placed in a... My question: Who attacks Mike and his partner Joe?
The answer to this question is:
Cannibals.