Soon after a Chinese princess comes to the US to buy planes for her people, she is murdered by a poison dart fired by an air rifle.

A fashion model witnesses the brutal assassination of an investigative journalist by the Ku Klux Klan while traveling to a small town to visit her sister.

Ellen Burton arrives in Africa to join Dr. Mary as her nurse, bringing modern medicine to the native peoples. Lonni Douglas, an animal wrangler and fortune hunter, agrees to take her upriver, despite his misgivings about her suitability for Africa. They battle escaped gorillas, hostile natives, infected lion wounds, and hostile witch doctors to reach their destination and on the way, they fall in love. Will their contrasting interests doom their romance?

San Quentin's new warden crusades for reform and for a framed inmate who loves a nurse.