A poor composer sells his songs to a music publisher who attributes them to his son, who sells them to a famous singer. Seeking the son, the musician's daughter will unexpectedly find a job as secretary to the singer, disguised as an unattractive and authoritative woman who effectively controls his careless lifestyle.

• Cifesa
• Josita Hernán
• Fernando Fernán Gómez
• José Isbert
• Lily Vincenti
• Luis Prendes
• Juan Moreno Rigo
• José Sanchíz
• Luis Pérez de León