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.