 An eccentric sideshow barker accidentally lets his sex-starved gorilla escape into the streets. The ape begins to go on a rampage of murder, incidentally killing some of the barker s enemies. Meanwhile, an innocent bystander known as Duane is believed guilty of the murders by racist police lieutenant LoBianco. Since Duane is black, LoBianco wants to throw all the blame towards him, but his sensible assistant Kerry believes the ape is really responsible for the bloodshed.