Thinking she is flirting with a prince, Lolita lies and tells him that she is a very wealthy heiress, and Gertrudis is her private secretary, traveling the world with her.
Distraught, Lolita explains what happened to the bank manager's wife, Doña Mercedes, whom she has been asked to help with an upcoming wedding anniversary party.
Mercedes convinces her husband, Don Pedro, to get the couple together, and invite Lolita and Alberto to their wedding anniversary party.
Castillos en el aire was one of a number of Spanish-language films produced by Monogram Pictures as part of a concerted effort to expand its market into Latin America.
[3] Cine-Mundial, the Spanish-language version of Moving Picture World, gave the film a positive review, calling it "light", "comical", and "unpretentious", and an enjoyable way to spend an hour and a half.