Mr. A. Royal Prince falls in love with the photograph of Miss Prunella Peach, a beautiful young society girl, and determines to win her. He sends her his photograph and a letter, saying he is going to marry her on May 1. When she receives his picture, she at once falls in love with it, but when she reads his note, becomes very angry and resolves not to be won in any such high-handed manner. Prince resorts to all sorts of means to win her favor, even going so far as to feign attempted suicide. Miss Peach is finally driven to the country to escape the persistent Mr. Prince. He follows. Only three days remain until May 1 and Mr. Prince becomes desperate. He discovers that Miss Peach intends taking a short trip in an aeroplane, and succeeds in bribing the aviator to allow him to take his place at the wheel. Disguised in long coat, cap and goggles, he helps Miss Peach into the machine and soars into the air. When they are about a thousand feet up, she begins to get nervous. He takes advantage of her fear, and hands her his card, on which is written, "I am going to keep you up here until you promise to marry me. Tomorrow will be May 1." Between anger, fright at their position and the treason of her own heart which inclines her to accept the audacious prince, she is at her wits' end. One glance at big determined face and she is won. She gives him her promise to become his wife and they glide gently back to earth on the wings of love.
—Moving Picture World synopsis