In Mexico, Police Captain Carlos Robles (Crox Alvarado) has no leads to solving a series of grisly murders of several of Mexico's top athletes. Unknown to the Comandante, scientist Don Panchito is responsible for the murders and has been murdering the athletic community in order to provide test subjects for his experiments; Panchito's procedure involves removing the victim's brain and replacing it with that of an animal's in an effort to find a way to conquer death.