Three escaped female convicts, along with an undercover policewoman, Lee Hampton, begin a search for stolen diamonds in the Louisiana swamps. The escape, allowed by the authorities, is part of a larger plan by the authorities is to trail the convicts and recover stolen diamonds. When notified that the stolen diamond cache has been recovered by the undercover officer, they plan to rearrest the women and return the diamonds to their rightful owner. The plan fails to work as designed. During the inmates' search of the swamp, they steal a boat from a research geologist and his girlfriend, resulting in the girlfriend's death from the attack of indigenous alligators. After recovery of the diamonds, one of the convicts double-crosses the others, attempting to sneak off with the guns and diamonds, but she is killed by the one of the other convicts. The two remaining convicts begin to suspect the undercover cop and threaten to kill the geologist if she doesn't reveal herself. A fight ensues between the convicts and the undercover officer, assisted by the geologist. which allows the authorities enough time to show up and regain custody of the two remaining fugitives.
—Garon Smith