The only business in the Wild West town of Jericho that corrupt sheriff Alex Flood doesn’t control behind the scenes is the stagecoach owned by tough-willed widow Molly Lang and her right-hand man, Hickman. Former marshal Dolan, recently hired by Lang and Hickman as a driver, wants to stay out of the mess, but when he sees Flood’s henchman Yarbrough assault Lang, he steps up to fight the corruption.

Sisters Myra and Ellie have finally had enough of their miserable, dead-end lives. When their stepfather Charley (the titular “Bonnie” being long dead) tried to rape Myra, Ellie ventilates him with a shotgun, and the pair run off to their wealthy uncle’s mansion in El Paso. From that point on, the two undergo a transformation in their personalities, and start to enjoy living their lives on the wild side.