A Secret Service agent seeks his missing brother in Africa, and finds his mission complicated by ivory thieves, a girl with a mysterious past, and a troublesome gorilla.

While a distinguished astronomer is giving a lecture in a planetarium, a shot rings out and one of the audience members is found dead. A tough detective and a brassy female reporter lock horns as they both try to break the case.

In Kronberg, Ruritania, the planned wedding of Queen Regina and Prince Wolfram is disrupted when the prince falls in love with Patricia Kelly, a beautiful orphan at the convent. The prince kidnaps Patricia and takes her to the palace, but the queen drives her out. After a botched suicide attempt, Patricia unwillingly allows her scurrilous aunt to marry her off to a decrepit scoundrel. Undaunted, Wolfram follows Patricia to her new home in East Africa.