Antonio Torres, a serious singer of Spanish popular music, and Bárbara, a vivacious yé-yé singer, face off in a chaotic contest promoted by Rodolfo Sicilia, an overworked publicist.

• Arturo González PC
• Concha Velasco
• Manolo Escobar
• Alfredo Landa
• Gracita Morales
• Antonio Ferrandis
• Joaquín Prat
• José María Caffarel
• Tomás Blanco