Left-behind rural housewife Lila Lane spoils the fierce dog Blackie given to her by her best friend. Ignoring warnings, she feeds the dog meat, triggering its feral instincts. Blackie bites livestock and people, trapping Lila and her mother-in-law. Veterinarian Harper Hale arrives in time to subdue the vicious dog with medicinal powder. After the injured come to their senses, they send Blackie to a professional institution, and peace returns to the household.